diff --git a/README.md b/README.md
index cab5c09a..5cfa08df 100644
--- a/README.md
+++ b/README.md
@@ -14,6 +14,7 @@ __IMPORTANT NOTICE:__ The contents of this repository currectly reflect a __DRAF
    1. [Event Structure](./eiffel-syntax-and-usage/event-structure.md)
    1. [The Meta Object](./eiffel-syntax-and-usage/the-meta-object.md)
    1. [The Links Object](./eiffel-syntax-and-usage/the-links-object.md)
+   1. [Versioning](./eiffel-syntax-and-usage/versioning.md)
    1. [Compositions and Validity Checking](./eiffel-syntax-and-usage/compositions-and-validity-checking.md)
 1. The Eiffel Vocabulary
    1. [EiffelActivityTriggeredEvent](./eiffel-vocabulary/EiffelActivityTriggeredEvent.md)
diff --git a/eiffel-syntax-and-usage/the-meta-object.md b/eiffel-syntax-and-usage/the-meta-object.md
index 1093c00a..4efea3d3 100644
--- a/eiffel-syntax-and-usage/the-meta-object.md
+++ b/eiffel-syntax-and-usage/the-meta-object.md
@@ -16,9 +16,9 @@ __Description:__ The type of event. This field is required by the recipient of t
 
 ### meta.version
 __Type:__ String  
-__Format:__ Semantic version excluding PATCH.  
+__Format:__ [Semantic Versioning 2.0.0](http://semver.org/spec/v2.0.0.html)  
 __Required:__ Yes  
-__Description:__ The version of the event type. This field is required by the recipient of the event to interpret the contents.
+__Description:__ The version of the event type. This field is required by the recipient of the event to interpret the contents. Please see [Versioning](./versioning.md) for more information.
 
 ### meta.time
 __Type:__ Integer  
diff --git a/eiffel-syntax-and-usage/versioning.md b/eiffel-syntax-and-usage/versioning.md
new file mode 100644
index 00000000..d1eede82
--- /dev/null
+++ b/eiffel-syntax-and-usage/versioning.md
@@ -0,0 +1,13 @@
+# Versioning
+In Eiffel, each individual event type is versioned independently. This version is declared by the __meta.version__ property (see [The Meta Object](./the-meta-object.md)) and follows the [Semantic Versioning 2.0.0](http://semver.org/spec/v2.0.0.html) format. The documentation of each event type lists the complete version history of that type, including links to commits introducing older versions of the type.
+
+The independent versioning of event types, as opposed to a protocol-wide versioning scheme, was chosen for the greater flexibility and extensibility it affords. There are consequences, however, which are important to understand:
+* Consumers must always be ready to receive event types which they are unable to parse: the event producer may be ahead of the consumer on one event type, but not another. Similarly, new and/or custom event types must be expected and handled.
+* Backwards incompatible changes may not be introduced to the __meta.type__ and __meta.version__ properties, as these together form the key which allows the consumer to unlock the remainder of the event.
+
+That being said, to facilitate compatibility and consistency, the Eiffel protocol as described in this repository is released in named and internally coherent _editions_. Each of these editions is represented as a GitHub [release](https://github.com/Ericsson/eiffel/releases). A history of Eiffel editions is available below.
+
+| Edition   | Tag |
+| --------- | ------------------ |
+| Bordeaux  | _First edition. Not yet finished. Planned for end of [Drop 4](https://github.com/Ericsson/eiffel/milestone/4)._  |
+
diff --git a/eiffel-vocabulary/EiffelActivityCanceledEvent.md b/eiffel-vocabulary/EiffelActivityCanceledEvent.md
index cc8a6ff5..eb3f7d41 100644
--- a/eiffel-vocabulary/EiffelActivityCanceledEvent.md
+++ b/eiffel-vocabulary/EiffelActivityCanceledEvent.md
@@ -7,5 +7,10 @@ __Type:__ String
 __Required:__ No  
 __Description:__ Any human readable information as to the reason for dequeueing.
 
+## Version History
+| Version   | Introducing Commit |
+| --------- | ------------------ |
+| 1.0.0     | _Current version_  |
+
 ## Examples
 * [Simple example](../examples/events/EiffelActivityCanceledEvent/simple.json)
\ No newline at end of file
diff --git a/eiffel-vocabulary/EiffelActivityFinishedEvent.md b/eiffel-vocabulary/EiffelActivityFinishedEvent.md
index 809503d4..2ab13ff0 100644
--- a/eiffel-vocabulary/EiffelActivityFinishedEvent.md
+++ b/eiffel-vocabulary/EiffelActivityFinishedEvent.md
@@ -39,5 +39,10 @@ __Type:__ String
 __Required:__ Yes  
 __Description:__ The URI at which the log can be retrieved.
 
+## Version History
+| Version   | Introducing Commit |
+| --------- | ------------------ |
+| 1.0.0     | _Current version_  |
+
 ## Examples
 * [Simple example](../examples/events/EiffelActivityFinishedEvent/simple.json)
\ No newline at end of file
diff --git a/eiffel-vocabulary/EiffelActivityStartedEvent.md b/eiffel-vocabulary/EiffelActivityStartedEvent.md
index fc151143..e388ca1e 100644
--- a/eiffel-vocabulary/EiffelActivityStartedEvent.md
+++ b/eiffel-vocabulary/EiffelActivityStartedEvent.md
@@ -22,5 +22,10 @@ __Type:__ String
 __Required:__ Yes  
 __Description:__ The URI at which the log can be retrieved.
 
+## Version History
+| Version   | Introducing Commit |
+| --------- | ------------------ |
+| 1.0.0     | _Current version_  |
+
 ## Examples
 * [Simple example](../examples/events/EiffelActivityStartedEvent/simple.json)
\ No newline at end of file
diff --git a/eiffel-vocabulary/EiffelActivityTriggeredEvent.md b/eiffel-vocabulary/EiffelActivityTriggeredEvent.md
index 8df3368d..3fde4d0d 100644
--- a/eiffel-vocabulary/EiffelActivityTriggeredEvent.md
+++ b/eiffel-vocabulary/EiffelActivityTriggeredEvent.md
@@ -41,6 +41,11 @@ __Required:__ No
 __Legal values:__ MANUAL, SEMI_AUTOMATED, AUTOMATED, OTHER  
 __Description:__ The type of execution (often related to, but ultimately separate from, __data.trigger.type__).
 
+## Version History
+| Version   | Introducing Commit |
+| --------- | ------------------ |
+| 1.0.0     | _Current version_  |
+
 ## Examples
 * [Simple example](../examples/events/EiffelActivityTriggeredEvent/simple.json)
 * [Example containing custom data](../examples/events/EiffelActivityTriggeredEvent/simple-customdata.json)
\ No newline at end of file
diff --git a/eiffel-vocabulary/EiffelArtifactCreatedEvent.md b/eiffel-vocabulary/EiffelArtifactCreatedEvent.md
index 7a527a09..7edd2f6c 100644
--- a/eiffel-vocabulary/EiffelArtifactCreatedEvent.md
+++ b/eiffel-vocabulary/EiffelArtifactCreatedEvent.md
@@ -92,6 +92,11 @@ __Type:__ String
 __Required:__ Yes  
 __Description:__ The version of the dependency. Note that [version range notation](https://docs.oracle.com/middleware/1212/core/MAVEN/maven_version.htm#MAVEN402) is supported.
 
+## Version History
+| Version   | Introducing Commit |
+| --------- | ------------------ |
+| 1.0.0     | _Current version_  |
+
 ## Examples
 * [Simple example](../examples/events/EiffelArtifactCreatedEvent/simple.json)
 * [Interface example](../examples/events/EiffelArtifactCreatedEvent/interface.json)
diff --git a/eiffel-vocabulary/EiffelArtifactPublishedEvent.md b/eiffel-vocabulary/EiffelArtifactPublishedEvent.md
index 120fe5d9..403ab6c7 100644
--- a/eiffel-vocabulary/EiffelArtifactPublishedEvent.md
+++ b/eiffel-vocabulary/EiffelArtifactPublishedEvent.md
@@ -22,5 +22,10 @@ __Type:__ String
 __Required:__ Yes  
 __Description:__ The URI at which the artifact can be retrieved.
 
+## Version History
+| Version   | Introducing Commit |
+| --------- | ------------------ |
+| 1.0.0     | _Current version_  |
+
 ## Examples
 * [Simple example](../examples/events/EiffelArtifactPublishedEvent/simple.json)
\ No newline at end of file
diff --git a/eiffel-vocabulary/EiffelCompositionDefinedEvent.md b/eiffel-vocabulary/EiffelCompositionDefinedEvent.md
index b7affc5c..0cfee497 100644
--- a/eiffel-vocabulary/EiffelCompositionDefinedEvent.md
+++ b/eiffel-vocabulary/EiffelCompositionDefinedEvent.md
@@ -12,5 +12,10 @@ __Type:__ String
 __Required:__ No  
 __Description:__ The version of the composition, if any. This is in a sense redundant, as relationships between compositions can be tracked via the __PREVIOUS_VERSION__ link type, but can be used for improved clarity and semantics.
 
+## Version History
+| Version   | Introducing Commit |
+| --------- | ------------------ |
+| 1.0.0     | _Current version_  |
+
 ## Examples
 * [Simple example](../examples/events/EiffelCompositionDefinedEvent/simple.json)
\ No newline at end of file
diff --git a/eiffel-vocabulary/EiffelConfidenceLevelModifiedEvent.md b/eiffel-vocabulary/EiffelConfidenceLevelModifiedEvent.md
index 2def24d3..23c4125e 100644
--- a/eiffel-vocabulary/EiffelConfidenceLevelModifiedEvent.md
+++ b/eiffel-vocabulary/EiffelConfidenceLevelModifiedEvent.md
@@ -43,5 +43,10 @@ __Type:__ String
 __Required:__ No  
 __Description:__ Any group, such as a development team, committee or test group, to which the issuer belongs.
 
+## Version History
+| Version   | Introducing Commit |
+| --------- | ------------------ |
+| 1.0.0     | _Current version_  |
+
 ## Examples
 * [Simple example](../examples/events/EiffelConfidenceLevelModifiedEvent/simple.json)
\ No newline at end of file
diff --git a/eiffel-vocabulary/EiffelEnvironmentDefinedEvent.md b/eiffel-vocabulary/EiffelEnvironmentDefinedEvent.md
index 35ceedce..1a3c5749 100644
--- a/eiffel-vocabulary/EiffelEnvironmentDefinedEvent.md
+++ b/eiffel-vocabulary/EiffelEnvironmentDefinedEvent.md
@@ -39,6 +39,11 @@ __Type:__ String
 __Required:__ No  
 __Description:__ A URI identifying the environment description. This is the catch-all method of environment descriptions. Eiffel does not concern itself with the format or nature of the description, but merely points to its location.
 
+## Version History
+| Version   | Introducing Commit |
+| --------- | ------------------ |
+| 1.0.0     | _Current version_  |
+
 ## Examples
 * [URI example](../examples/events/EiffelEnvironmentDefinedEvent/uri.json)
 * [Host example](../examples/events/EiffelEnvironmentDefinedEvent/host.json)
diff --git a/eiffel-vocabulary/EiffelFlowContextDefinedEvent.md b/eiffel-vocabulary/EiffelFlowContextDefinedEvent.md
index 4899b9e8..808d8db6 100644
--- a/eiffel-vocabulary/EiffelFlowContextDefinedEvent.md
+++ b/eiffel-vocabulary/EiffelFlowContextDefinedEvent.md
@@ -29,5 +29,10 @@ __Type:__ String
 __Required:__ No  
 __Description:__ A version context which other events can relate to. This member SHOULD be used in tandem with one of the other optional members - a version by itself is not very informative.
 
+## Version History
+| Version   | Introducing Commit |
+| --------- | ------------------ |
+| 1.0.0     | _Current version_  |
+
 ## Examples
 * [Simple example](../examples/events/EiffelFlowContextDefinedEvent/simple.json)
\ No newline at end of file
diff --git a/eiffel-vocabulary/EiffelSourceChangeCreatedEvent.md b/eiffel-vocabulary/EiffelSourceChangeCreatedEvent.md
index ae461675..fa59b5d7 100644
--- a/eiffel-vocabulary/EiffelSourceChangeCreatedEvent.md
+++ b/eiffel-vocabulary/EiffelSourceChangeCreatedEvent.md
@@ -191,5 +191,11 @@ __Type:__ String
 __Required:__ Yes  
 __Description:__ The URI of the repo.
 
+## Version History
+| Version   | Introducing Commit |
+| --------- | ------------------ |
+| 1.0.0     | _Current version_  |
+
 ## Examples
-* [Simple example](../examples/events/EiffelSourceChangeCreatedEvent/simple.json)
\ No newline at end of file
+* [Simple example](../examples/events/EiffelSourceChangeCreatedEvent/simple.json)
+
diff --git a/eiffel-vocabulary/EiffelSourceChangeSubmittedEvent.md b/eiffel-vocabulary/EiffelSourceChangeSubmittedEvent.md
index 9aab1676..f6130cee 100644
--- a/eiffel-vocabulary/EiffelSourceChangeSubmittedEvent.md
+++ b/eiffel-vocabulary/EiffelSourceChangeSubmittedEvent.md
@@ -126,5 +126,10 @@ __Type:__ String
 __Required:__ Yes  
 __Description:__ The URI of the repo.
 
+## Version History
+| Version   | Introducing Commit |
+| --------- | ------------------ |
+| 1.0.0     | _Current version_  |
+
 ## Examples
 * [Simple example](../examples/events/EiffelSourceChangeSubmittedEvent/simple.json)
\ No newline at end of file
diff --git a/eiffel-vocabulary/EiffelTestCaseFinishedEvent.md b/eiffel-vocabulary/EiffelTestCaseFinishedEvent.md
index 7366edce..07b99303 100644
--- a/eiffel-vocabulary/EiffelTestCaseFinishedEvent.md
+++ b/eiffel-vocabulary/EiffelTestCaseFinishedEvent.md
@@ -51,5 +51,10 @@ __Type:__ String
 __Required:__ Yes  
 __Description:__ The URI at which the log can be retrieved.
 
+## Version History
+| Version   | Introducing Commit |
+| --------- | ------------------ |
+| 1.0.0     | _Current version_  |
+
 ## Examples
 * [Simple example](../examples/events/EiffelTestCaseFinishedEvent/simple.json)
\ No newline at end of file
diff --git a/eiffel-vocabulary/EiffelTestCaseStartedEvent.md b/eiffel-vocabulary/EiffelTestCaseStartedEvent.md
index f1d4f1c3..da52fa8c 100644
--- a/eiffel-vocabulary/EiffelTestCaseStartedEvent.md
+++ b/eiffel-vocabulary/EiffelTestCaseStartedEvent.md
@@ -63,5 +63,10 @@ __Type:__ String
 __Required:__ Yes  
 __Description:__ The URI at which the log can be retrieved.
 
+## Version History
+| Version   | Introducing Commit |
+| --------- | ------------------ |
+| 1.0.0     | _Current version_  |
+
 ## Examples
 * [Simple example](../examples/events/EiffelTestCaseStartedEvent/simple.json)
\ No newline at end of file
diff --git a/eiffel-vocabulary/EiffelTestSuiteFinishedEvent.md b/eiffel-vocabulary/EiffelTestSuiteFinishedEvent.md
index 79b7d704..fbceb9c0 100644
--- a/eiffel-vocabulary/EiffelTestSuiteFinishedEvent.md
+++ b/eiffel-vocabulary/EiffelTestSuiteFinishedEvent.md
@@ -49,5 +49,10 @@ __Type:__ String
 __Required:__ Yes  
 __Description:__ The URI at which the log can be retrieved.
 
+## Version History
+| Version   | Introducing Commit |
+| --------- | ------------------ |
+| 1.0.0     | _Current version_  |
+
 ## Examples
 * [Simple example](../examples/events/EiffelTestSuiteFinishedEvent/simple.json)
\ No newline at end of file
diff --git a/eiffel-vocabulary/EiffelTestSuiteStartedEvent.md b/eiffel-vocabulary/EiffelTestSuiteStartedEvent.md
index cc11d17a..9810edc8 100644
--- a/eiffel-vocabulary/EiffelTestSuiteStartedEvent.md
+++ b/eiffel-vocabulary/EiffelTestSuiteStartedEvent.md
@@ -35,5 +35,10 @@ __Type:__ String
 __Required:__ Yes  
 __Description:__ The URI at which the log can be retrieved.
 
+## Version History
+| Version   | Introducing Commit |
+| --------- | ------------------ |
+| 1.0.0     | _Current version_  |
+
 ## Examples
 * [Simple example](../examples/events/EiffelTestSuiteStartedEvent/simple.json)
\ No newline at end of file
diff --git a/examples/events/EiffelActivityCanceledEvent/simple.json b/examples/events/EiffelActivityCanceledEvent/simple.json
index 46b31a47..de9a1dc2 100644
--- a/examples/events/EiffelActivityCanceledEvent/simple.json
+++ b/examples/events/EiffelActivityCanceledEvent/simple.json
@@ -1,7 +1,7 @@
 {
   "meta": {
     "type": "EiffelActivityCanceledEvent",
-    "version": "1.0",
+    "version": "1.0.0",
     "time": 1234567890,
     "id": "aaaaaaaa-bbbb-cccc-dddd-eeeeeeeeeee0",
     "source": {
diff --git a/examples/events/EiffelActivityFinishedEvent/simple.json b/examples/events/EiffelActivityFinishedEvent/simple.json
index 3996833e..62f12547 100644
--- a/examples/events/EiffelActivityFinishedEvent/simple.json
+++ b/examples/events/EiffelActivityFinishedEvent/simple.json
@@ -1,7 +1,7 @@
 {
   "meta": {
     "type": "EiffelActivityFinishedEvent",
-    "version": "1.0",
+    "version": "1.0.0",
     "time": 1234567890,
     "id": "aaaaaaaa-bbbb-cccc-dddd-eeeeeeeeeee0",
     "source": {
diff --git a/examples/events/EiffelActivityStartedEvent/simple.json b/examples/events/EiffelActivityStartedEvent/simple.json
index cb3329ba..7be31648 100644
--- a/examples/events/EiffelActivityStartedEvent/simple.json
+++ b/examples/events/EiffelActivityStartedEvent/simple.json
@@ -1,7 +1,7 @@
 {
   "meta": {
     "type": "EiffelActivityStartedEvent",
-    "version": "1.0",
+    "version": "1.0.0",
     "time": 1234567890,
     "id": "aaaaaaaa-bbbb-cccc-dddd-eeeeeeeeeee0",
     "source": {
diff --git a/examples/events/EiffelActivityTriggeredEvent/simple-customdata.json b/examples/events/EiffelActivityTriggeredEvent/simple-customdata.json
index 2b4f43e1..ecaa0c69 100644
--- a/examples/events/EiffelActivityTriggeredEvent/simple-customdata.json
+++ b/examples/events/EiffelActivityTriggeredEvent/simple-customdata.json
@@ -2,7 +2,7 @@
   "meta": {
     "id": "aaaaaaaa-bbbb-cccc-dddd-eeeeeeeeeee0",
     "type": "EiffelActivityTriggeredEvent",
-    "version": "1.0",
+    "version": "1.0.0",
     "time": 1234567890,
     "source": {
       "domainId": "test-domainId"
diff --git a/examples/events/EiffelActivityTriggeredEvent/simple.json b/examples/events/EiffelActivityTriggeredEvent/simple.json
index 527b703d..e033f135 100644
--- a/examples/events/EiffelActivityTriggeredEvent/simple.json
+++ b/examples/events/EiffelActivityTriggeredEvent/simple.json
@@ -2,7 +2,7 @@
   "meta": {
     "id": "e1e93f13-7c3c-4f17-9753-ebf0c86ff1c2",
     "type": "EiffelActivityTriggeredEvent",
-    "version": "1.0",
+    "version": "1.0.0",
     "time": 1234567890,
     "source": {
       "domainId": "example.domain"
diff --git a/examples/events/EiffelArtifactCreatedEvent/backend.json b/examples/events/EiffelArtifactCreatedEvent/backend.json
index 954c3e21..1b8a729a 100644
--- a/examples/events/EiffelArtifactCreatedEvent/backend.json
+++ b/examples/events/EiffelArtifactCreatedEvent/backend.json
@@ -1,7 +1,7 @@
 {
   "meta": {
     "type": "EiffelArtifactCreatedEvent",
-    "version": "1.0",
+    "version": "1.0.0",
     "time": 1234567890,
     "source": {
       "domainId": "example.domain"
diff --git a/examples/events/EiffelArtifactCreatedEvent/dependent.json b/examples/events/EiffelArtifactCreatedEvent/dependent.json
index db22cda2..2de92e7a 100644
--- a/examples/events/EiffelArtifactCreatedEvent/dependent.json
+++ b/examples/events/EiffelArtifactCreatedEvent/dependent.json
@@ -1,7 +1,7 @@
 {
   "meta": {
     "type": "EiffelArtifactCreatedEvent",
-    "version": "1.0",
+    "version": "1.0.0",
     "time": 1234567890,
     "source": {
       "domainId": "example.domain"
diff --git a/examples/events/EiffelArtifactCreatedEvent/interface.json b/examples/events/EiffelArtifactCreatedEvent/interface.json
index 4ca39e9c..4a891e49 100644
--- a/examples/events/EiffelArtifactCreatedEvent/interface.json
+++ b/examples/events/EiffelArtifactCreatedEvent/interface.json
@@ -1,7 +1,7 @@
 {
   "meta": {
     "type": "EiffelArtifactCreatedEvent",
-    "version": "1.0",
+    "version": "1.0.0",
     "time": 1234567890,
     "source": {
       "domainId": "example.domain"
diff --git a/examples/events/EiffelArtifactCreatedEvent/simple.json b/examples/events/EiffelArtifactCreatedEvent/simple.json
index 4e5ffb55..f3be2ffc 100644
--- a/examples/events/EiffelArtifactCreatedEvent/simple.json
+++ b/examples/events/EiffelArtifactCreatedEvent/simple.json
@@ -1,7 +1,7 @@
 {
   "meta": {
     "type": "EiffelArtifactCreatedEvent",
-    "version": "1.0",
+    "version": "1.0.0",
     "time": 1234567890,
     "id": "aaaaaaaa-bbbb-cccc-dddd-eeeeeeeeeee0",
     "source": {
diff --git a/examples/events/EiffelArtifactPublishedEvent/simple.json b/examples/events/EiffelArtifactPublishedEvent/simple.json
index 8e5c3690..6b9c4e72 100644
--- a/examples/events/EiffelArtifactPublishedEvent/simple.json
+++ b/examples/events/EiffelArtifactPublishedEvent/simple.json
@@ -1,7 +1,7 @@
 {
   "meta": {
     "type": "EiffelArtifactPublishedEvent",
-    "version": "1.0",
+    "version": "1.0.0",
     "time": 1234567890,
     "id": "aaaaaaaa-bbbb-cccc-dddd-eeeeeeeeeee0",
     "source": {
diff --git a/examples/events/EiffelCompositionDefinedEvent/simple.json b/examples/events/EiffelCompositionDefinedEvent/simple.json
index fe3dc36d..471c0d92 100644
--- a/examples/events/EiffelCompositionDefinedEvent/simple.json
+++ b/examples/events/EiffelCompositionDefinedEvent/simple.json
@@ -1,7 +1,7 @@
 {
   "meta": {
     "type": "EiffelCompositionDefinedEvent",
-    "version": "1.0",
+    "version": "1.0.0",
     "time": 1234567890,
     "domainId": "example.domain",
     "id": "aaaaaaaa-bbbb-cccc-dddd-eeeeeeeeeee0"
diff --git a/examples/events/EiffelConfidenceLevelModifiedEvent/simple.json b/examples/events/EiffelConfidenceLevelModifiedEvent/simple.json
index 4a42e8d3..593f930a 100644
--- a/examples/events/EiffelConfidenceLevelModifiedEvent/simple.json
+++ b/examples/events/EiffelConfidenceLevelModifiedEvent/simple.json
@@ -1,7 +1,7 @@
 {
   "meta": {
     "type": "EiffelConfidenceLevelModifiedEvent",
-    "version": "1.0",
+    "version": "1.0.0",
     "time": 1234567890,
     "id": "aaaaaaaa-bbbb-cccc-dddd-eeeeeeeeeee0",
     "source": {
diff --git a/examples/events/EiffelEnvironmentDefinedEvent/host.json b/examples/events/EiffelEnvironmentDefinedEvent/host.json
index d018ea87..bbb0bc65 100644
--- a/examples/events/EiffelEnvironmentDefinedEvent/host.json
+++ b/examples/events/EiffelEnvironmentDefinedEvent/host.json
@@ -1,7 +1,7 @@
 {
   "meta": {
     "type": "EiffelEnvironmentDefinedEvent",
-    "version": "1.0",
+    "version": "1.0.0",
     "time": 1234567890,
     "id": "aaaaaaaa-bbbb-cccc-dddd-eeeeeeeeeee0",
     "source": {
diff --git a/examples/events/EiffelEnvironmentDefinedEvent/image.json b/examples/events/EiffelEnvironmentDefinedEvent/image.json
index b7d7fd0e..8c06728c 100644
--- a/examples/events/EiffelEnvironmentDefinedEvent/image.json
+++ b/examples/events/EiffelEnvironmentDefinedEvent/image.json
@@ -1,7 +1,7 @@
 {
   "meta": {
     "type": "EiffelEnvironmentDefinedEvent",
-    "version": "1.0",
+    "version": "1.0.0",
     "time": 1234567890,
     "id": "aaaaaaaa-bbbb-cccc-dddd-eeeeeeeeeee0",
     "source": {
diff --git a/examples/events/EiffelEnvironmentDefinedEvent/uri.json b/examples/events/EiffelEnvironmentDefinedEvent/uri.json
index 5e258303..121b1320 100644
--- a/examples/events/EiffelEnvironmentDefinedEvent/uri.json
+++ b/examples/events/EiffelEnvironmentDefinedEvent/uri.json
@@ -1,7 +1,7 @@
 {
   "meta": {
     "type": "EiffelEnvironmentDefinedEvent",
-    "version": "1.0",
+    "version": "1.0.0",
     "time": 1234567890,
     "id": "aaaaaaaa-bbbb-cccc-dddd-eeeeeeeeeee0",
     "source": {
diff --git a/examples/events/EiffelFlowContextDefinedEvent/simple.json b/examples/events/EiffelFlowContextDefinedEvent/simple.json
index e043e858..9281675f 100644
--- a/examples/events/EiffelFlowContextDefinedEvent/simple.json
+++ b/examples/events/EiffelFlowContextDefinedEvent/simple.json
@@ -1,7 +1,7 @@
 {
   "meta": {
     "type": "EiffelFlowContextDefined",
-    "version": "1.0",
+    "version": "1.0.0",
     "time": 1234567890,
     "source": {
       "domainId": "example.domain"
diff --git a/examples/events/EiffelSourceChangeCreatedEvent/simple.json b/examples/events/EiffelSourceChangeCreatedEvent/simple.json
index 88db7720..89268ff0 100644
--- a/examples/events/EiffelSourceChangeCreatedEvent/simple.json
+++ b/examples/events/EiffelSourceChangeCreatedEvent/simple.json
@@ -1,7 +1,7 @@
 {
   "meta": {
     "type": "EiffelSourceChangeCreatedEvent",
-    "version": "1.0",
+    "version": "1.0.0",
     "time": 1234567890,
     "domainId": "example.domain",
     "id": "aaaaaaaa-bbbb-cccc-dddd-eeeeeeeeeee0"
diff --git a/examples/events/EiffelSourceChangeSubmittedEvent/simple.json b/examples/events/EiffelSourceChangeSubmittedEvent/simple.json
index cb641da7..681abea9 100644
--- a/examples/events/EiffelSourceChangeSubmittedEvent/simple.json
+++ b/examples/events/EiffelSourceChangeSubmittedEvent/simple.json
@@ -1,7 +1,7 @@
 {
   "meta": {
     "type": "EiffelSourceChangeSubmittedEvent",
-    "version": "1.0",
+    "version": "1.0.0",
     "time": 1234567890,
     "domainId": "example.domain",
     "id": "aaaaaaaa-bbbb-cccc-dddd-eeeeeeeeeee0"
diff --git a/examples/events/EiffelTestCaseFinishedEvent/simple.json b/examples/events/EiffelTestCaseFinishedEvent/simple.json
index b32342cf..d49b5406 100644
--- a/examples/events/EiffelTestCaseFinishedEvent/simple.json
+++ b/examples/events/EiffelTestCaseFinishedEvent/simple.json
@@ -1,7 +1,7 @@
 {
   "meta": {
     "type": "EiffelTestCaseFinishedEvent",
-    "version": "1.0",
+    "version": "1.0.0",
     "time": 1234567890,
     "id": "aaaaaaaa-bbbb-cccc-dddd-eeeeeeeeeee0",
     "source": {
diff --git a/examples/events/EiffelTestCaseStartedEvent/simple.json b/examples/events/EiffelTestCaseStartedEvent/simple.json
index ed2e59d4..3023fb7d 100644
--- a/examples/events/EiffelTestCaseStartedEvent/simple.json
+++ b/examples/events/EiffelTestCaseStartedEvent/simple.json
@@ -1,7 +1,7 @@
 {
   "meta": {
     "type": "EiffelTestCaseStartedEvent",
-    "version": "1.0",
+    "version": "1.0.0",
     "time": 1234567890,
     "id": "aaaaaaaa-bbbb-cccc-dddd-eeeeeeeeeee0",
     "source": {
diff --git a/examples/events/EiffelTestSuiteFinishedEvent/simple.json b/examples/events/EiffelTestSuiteFinishedEvent/simple.json
index d61b69a5..b13d0d95 100644
--- a/examples/events/EiffelTestSuiteFinishedEvent/simple.json
+++ b/examples/events/EiffelTestSuiteFinishedEvent/simple.json
@@ -1,7 +1,7 @@
 {
   "meta": {
     "type": "EiffelTestSuiteFinishedEvent",
-    "version": "1.0",
+    "version": "1.0.0",
     "time": 1234567890,
     "id": "aaaaaaaa-bbbb-cccc-dddd-eeeeeeeeeee0",
     "source": {
diff --git a/examples/events/EiffelTestSuiteStartedEvent/simple.json b/examples/events/EiffelTestSuiteStartedEvent/simple.json
index 516f722e..2d132234 100644
--- a/examples/events/EiffelTestSuiteStartedEvent/simple.json
+++ b/examples/events/EiffelTestSuiteStartedEvent/simple.json
@@ -1,7 +1,7 @@
 {
   "meta": {
     "type": "EiffelTestSuiteStartedEvent",
-    "version": "1.0",
+    "version": "1.0.0",
     "time": 1234567890,
     "source": {
       "domainId": "example.domain"
diff --git a/examples/flows/build-avoidance/events.json b/examples/flows/build-avoidance/events.json
index dacc8bd7..a554d09e 100644
--- a/examples/flows/build-avoidance/events.json
+++ b/examples/flows/build-avoidance/events.json
@@ -2,7 +2,7 @@
   {
     "meta": {
       "type": "EiffelSourceChangeSubmittedEvent",
-      "version": "1.0",
+      "version": "1.0.0",
       "time": 1000,
       "id": "aaaaaaaa-bbbb-cccc-dddd-eeeeeeeeeee0",
       "source": {
@@ -18,7 +18,7 @@
   {
     "meta": {
       "type": "EiffelSourceChangeSubmittedEvent",
-      "version": "1.0",
+      "version": "1.0.0",
       "time": 101000,
       "id": "aaaaaaaa-bbbb-cccc-dddd-eeeeeeeeeee1",
       "source": {
@@ -38,7 +38,7 @@
   {
     "meta": {
       "type": "EiffelCompositionDefinedEvent",
-      "version": "1.0",
+      "version": "1.0.0",
       "time": 2000,
       "id": "aaaaaaaa-bbbb-cccc-dddd-eeeeeeeeeee2",
       "source": {
@@ -58,7 +58,7 @@
   {
     "meta": {
       "type": "EiffelCompositionDefinedEvent",
-      "version": "1.0",
+      "version": "1.0.0",
       "time": 102000,
       "id": "aaaaaaaa-bbbb-cccc-dddd-eeeeeeeeeee3",
       "source": {
@@ -82,7 +82,7 @@
   {
     "meta": {
       "type": "EiffelArtifactCreatedEvent",
-      "version": "1.0",
+      "version": "1.0.0",
       "time": 3000,
       "id": "aaaaaaaa-bbbb-cccc-dddd-eeeeeeeeeee4",
       "source": {
@@ -113,7 +113,7 @@
   {
     "meta": {
       "type": "EiffelArtifactCreatedEvent",
-      "version": "1.0",
+      "version": "1.0.0",
       "time": 4000,
       "id": "aaaaaaaa-bbbb-cccc-dddd-eeeeeeeeeee5",
       "source": {
@@ -144,7 +144,7 @@
   {
     "meta": {
       "type": "EiffelArtifactCreatedEvent",
-      "version": "1.0",
+      "version": "1.0.0",
       "time": 5000,
       "id": "aaaaaaaa-bbbb-cccc-dddd-eeeeeeeeeee6",
       "source": {
@@ -175,7 +175,7 @@
   {
     "meta": {
       "type": "EiffelArtifactCreatedEvent",
-      "version": "1.0",
+      "version": "1.0.0",
       "time": 6000,
       "id": "aaaaaaaa-bbbb-cccc-dddd-eeeeeeeeeee7",
       "source": {
@@ -206,7 +206,7 @@
   {
     "meta": {
       "type": "EiffelArtifactCreatedEvent",
-      "version": "1.0",
+      "version": "1.0.0",
       "time": 7000,
       "id": "aaaaaaaa-bbbb-cccc-dddd-eeeeeeeeeee8",
       "source": {
@@ -237,7 +237,7 @@
   {
     "meta": {
       "type": "EiffelArtifactCreatedEvent",
-      "version": "1.0",
+      "version": "1.0.0",
       "time": 103000,
       "id": "aaaaaaaa-bbbb-cccc-dddd-eeeeeeeeeee9",
       "source": {
@@ -272,7 +272,7 @@
   {
     "meta": {
       "type": "EiffelArtifactCreatedEvent",
-      "version": "1.0",
+      "version": "1.0.0",
       "time": 104000,
       "id": "aaaaaaaa-bbbb-cccc-dddd-eeeeeeeeee10",
       "source": {
@@ -307,7 +307,7 @@
   {
     "meta": {
       "type": "EiffelCompositionDefinedEvent",
-      "version": "1.0",
+      "version": "1.0.0",
       "time": 8000,
       "id": "aaaaaaaa-bbbb-cccc-dddd-eeeeeeeeee11",
       "source": {
@@ -343,7 +343,7 @@
   {
     "meta": {
       "type": "EiffelCompositionDefinedEvent",
-      "version": "1.0",
+      "version": "1.0.0",
       "time": 105000,
       "id": "aaaaaaaa-bbbb-cccc-dddd-eeeeeeeeee12",
       "source": {
diff --git a/examples/flows/confidence-level-joining/events.json b/examples/flows/confidence-level-joining/events.json
index 0c973cd5..aa8ed324 100644
--- a/examples/flows/confidence-level-joining/events.json
+++ b/examples/flows/confidence-level-joining/events.json
@@ -2,7 +2,7 @@
   {
     "meta": {
       "type": "EiffelEnvironmentDefinedEvent",
-      "version": "1.0",
+      "version": "1.0.0",
       "time": 1000,
       "id": "aaaaaaaa-bbbb-cccc-dddd-eeeeeeeeeee0",
       "source": {
@@ -18,7 +18,7 @@
   {
     "meta": {
       "type": "EiffelCompositionDefinedEvent",
-      "version": "1.0",
+      "version": "1.0.0",
       "time": 2000,
       "id": "aaaaaaaa-bbbb-cccc-dddd-eeeeeeeeeee1",
       "source": {
@@ -34,7 +34,7 @@
   {
     "meta": {
       "type": "EiffelArtifactCreatedEvent",
-      "version": "1.0",
+      "version": "1.0.0",
       "time": 3000,
       "id": "aaaaaaaa-bbbb-cccc-dddd-eeeeeeeeeee2",
       "source": {
@@ -73,7 +73,7 @@
   {
     "meta": {
       "type": "EiffelArtifactPublishedEvent",
-      "version": "1.0",
+      "version": "1.0.0",
       "time": 4000,
       "id": "aaaaaaaa-bbbb-cccc-dddd-eeeeeeeeeee3",
       "source": {
@@ -102,7 +102,7 @@
   {
     "meta": {
       "type": "EiffelActivityTriggeredEvent",
-      "version": "1.0",
+      "version": "1.0.0",
       "time": 5000,
       "id": "aaaaaaaa-bbbb-cccc-dddd-eeeeeeeeeee4",
       "source": {
@@ -129,7 +129,7 @@
   {
     "meta": {
       "type": "EiffelActivityTriggeredEvent",
-      "version": "1.0",
+      "version": "1.0.0",
       "time": 6000,
       "id": "aaaaaaaa-bbbb-cccc-dddd-eeeeeeeeeee5",
       "source": {
@@ -156,7 +156,7 @@
   {
     "meta": {
       "type": "EiffelActivityStartedEvent",
-      "version": "1.0",
+      "version": "1.0.0",
       "time": 7000,
       "id": "aaaaaaaa-bbbb-cccc-dddd-eeeeeeeeeee6",
       "source": {
@@ -175,7 +175,7 @@
   {
     "meta": {
       "type": "EiffelActivityStartedEvent",
-      "version": "1.0",
+      "version": "1.0.0",
       "time": 8000,
       "id": "aaaaaaaa-bbbb-cccc-dddd-eeeeeeeeeee7",
       "source": {
@@ -194,7 +194,7 @@
   {
     "meta": {
       "type": "EiffelTestCaseStartedEvent",
-      "version": "1.0",
+      "version": "1.0.0",
       "time": 9000,
       "id": "aaaaaaaa-bbbb-cccc-dddd-eeeeeeeeeee8",
       "source": {
@@ -218,7 +218,7 @@
   {
     "meta": {
       "type": "EiffelTestCaseStartedEvent",
-      "version": "1.0",
+      "version": "1.0.0",
       "time": 9000,
       "id": "aaaaaaaa-bbbb-cccc-dddd-eeeeeeeeeee9",
       "source": {
@@ -242,7 +242,7 @@
   {
     "meta": {
       "type": "EiffelTestCaseStartedEvent",
-      "version": "1.0",
+      "version": "1.0.0",
       "time": 9000,
       "id": "aaaaaaaa-bbbb-cccc-dddd-eeeeeeeeeee10",
       "source": {
@@ -266,7 +266,7 @@
   {
     "meta": {
       "type": "EiffelTestCaseStartedEvent",
-      "version": "1.0",
+      "version": "1.0.0",
       "time": 9000,
       "id": "aaaaaaaa-bbbb-cccc-dddd-eeeeeeeeee11",
       "source": {
@@ -290,7 +290,7 @@
   {
     "meta": {
       "type": "EiffelTestCaseFinishedEvent",
-      "version": "1.0",
+      "version": "1.0.0",
       "time": 19000,
       "id": "aaaaaaaa-bbbb-cccc-dddd-eeeeeeeeee12",
       "source": {
@@ -310,7 +310,7 @@
   {
     "meta": {
       "type": "EiffelTestCaseFinishedEvent",
-      "version": "1.0",
+      "version": "1.0.0",
       "time": 14000,
       "id": "aaaaaaaa-bbbb-cccc-dddd-eeeeeeeeee13",
       "source": {
@@ -330,7 +330,7 @@
   {
     "meta": {
       "type": "EiffelTestCaseFinishedEvent",
-      "version": "1.0",
+      "version": "1.0.0",
       "time": 16000,
       "id": "aaaaaaaa-bbbb-cccc-dddd-eeeeeeeeee14",
       "source": {
@@ -350,7 +350,7 @@
   {
     "meta": {
       "type": "EiffelTestCaseFinishedEvent",
-      "version": "1.0",
+      "version": "1.0.0",
       "time": 15000,
       "id": "aaaaaaaa-bbbb-cccc-dddd-eeeeeeeeee15",
       "source": {
@@ -370,7 +370,7 @@
   {
     "meta": {
       "type": "EiffelActivityFinishedEvent",
-      "version": "1.0",
+      "version": "1.0.0",
       "time": 20000,
       "id": "aaaaaaaa-bbbb-cccc-dddd-eeeeeeeeee16",
       "source": {
@@ -392,7 +392,7 @@
   {
     "meta": {
       "type": "EiffelActivityFinishedEvent",
-      "version": "1.0",
+      "version": "1.0.0",
       "time": 20000,
       "id": "aaaaaaaa-bbbb-cccc-dddd-eeeeeeeeee17",
       "source": {
@@ -414,7 +414,7 @@
   {
     "meta": {
       "type": "EiffelConfidenceLevelModifiedEvent",
-      "version": "1.0",
+      "version": "1.0.0",
       "time": 21000,
       "id": "aaaaaaaa-bbbb-cccc-dddd-eeeeeeeeee18",
       "source": {
diff --git a/examples/flows/delivery-interface/events.json b/examples/flows/delivery-interface/events.json
index bfa178c5..b24172bd 100644
--- a/examples/flows/delivery-interface/events.json
+++ b/examples/flows/delivery-interface/events.json
@@ -2,7 +2,7 @@
   {
     "meta": {
       "type": "EiffelSourceChangeSubmittedEvent",
-      "version": "1.0",
+      "version": "1.0.0",
       "time": 1000,
       "id": "aaaaaaaa-bbbb-cccc-dddd-eeeeeeeeeee0",
       "source": {
@@ -18,7 +18,7 @@
   {
     "meta": {
       "type": "EiffelSourceChangeCreatedEvent",
-      "version": "1.0",
+      "version": "1.0.0",
       "time": 101000,
       "id": "aaaaaaaa-bbbb-cccc-dddd-eeeeeeeeeee1",
       "source": {
@@ -38,7 +38,7 @@
   {
     "meta": {
       "type": "EiffelSourceChangeCreatedEvent",
-      "version": "1.0",
+      "version": "1.0.0",
       "time": 102000,
       "id": "aaaaaaaa-bbbb-cccc-dddd-eeeeeeeeeee2",
       "source": {
@@ -62,7 +62,7 @@
   {
     "meta": {
       "type": "EiffelSourceChangeSubmittedEvent",
-      "version": "1.0",
+      "version": "1.0.0",
       "time": 103000,
       "id": "aaaaaaaa-bbbb-cccc-dddd-eeeeeeeeeee3",
       "source": {
@@ -86,7 +86,7 @@
   {
     "meta": {
       "type": "EiffelSourceChangeCreatedEvent",
-      "version": "1.0",
+      "version": "1.0.0",
       "time": 201000,
       "id": "aaaaaaaa-bbbb-cccc-dddd-eeeeeeeeeee4",
       "source": {
@@ -106,7 +106,7 @@
   {
     "meta": {    
       "type": "EiffelSourceChangeSubmittedEvent",
-      "version": "1.0",
+      "version": "1.0.0",
       "time": 202000,
       "id": "aaaaaaaa-bbbb-cccc-dddd-eeeeeeeeeee5",
       "source": {
@@ -130,7 +130,7 @@
   {
     "meta": {
       "type": "EiffelCompositionDefinedEvent",
-      "version": "1.0",
+      "version": "1.0.0",
       "time": 2000,
       "id": "aaaaaaaa-bbbb-cccc-dddd-eeeeeeeeeee6",
       "source": {
@@ -150,7 +150,7 @@
   {
     "meta": {
       "type": "EiffelCompositionDefinedEvent",
-      "version": "1.0",
+      "version": "1.0.0",
       "time": 104000,
       "id": "aaaaaaaa-bbbb-cccc-dddd-eeeeeeeeeee7",
       "source": {
@@ -174,7 +174,7 @@
   {
     "meta": {
       "type": "EiffelCompositionDefinedEvent",
-      "version": "1.0",
+      "version": "1.0.0",
       "time": 203000,
       "id": "aaaaaaaa-bbbb-cccc-dddd-eeeeeeeeeee8",
       "source": {
@@ -198,7 +198,7 @@
   {
     "meta": {
       "type": "EiffelArtifactCreatedEvent",
-      "version": "1.0",
+      "version": "1.0.0",
       "time": 3000,
       "id": "aaaaaaaa-bbbb-cccc-dddd-eeeeeeeeeee9",
       "source": {
@@ -229,7 +229,7 @@
   {
     "meta": {
       "type": "EiffelArtifactCreatedEvent",
-      "version": "1.0",
+      "version": "1.0.0",
       "time": 204000,
       "id": "aaaaaaaa-bbbb-cccc-dddd-eeeeeeeeee10",
       "source": {
@@ -260,7 +260,7 @@
   {
     "meta": {
       "type": "EiffelTestCaseStartedEvent",
-      "version": "1.0",
+      "version": "1.0.0",
       "time": 4000,
       "id": "aaaaaaaa-bbbb-cccc-dddd-eeeeeeeeee11",
       "source": {
@@ -280,7 +280,7 @@
   {
     "meta": {
       "type": "EiffelTestCaseStartedEvent",
-      "version": "1.0",
+      "version": "1.0.0",
       "time": 205000,
       "id": "aaaaaaaa-bbbb-cccc-dddd-eeeeeeeeee12",
       "source": {
@@ -300,7 +300,7 @@
   {
     "meta": {
       "type": "EiffelTestCaseFinishedEvent",
-      "version": "1.0",
+      "version": "1.0.0",
       "time": 5000,
       "id": "aaaaaaaa-bbbb-cccc-dddd-eeeeeeeeee13",
       "source": {
@@ -320,7 +320,7 @@
   {
     "meta": {
       "type": "EiffelTestCaseFinishedEvent",
-      "version": "1.0",
+      "version": "1.0.0",
       "time": 206000,
       "id": "aaaaaaaa-bbbb-cccc-dddd-eeeeeeeeee14",
       "source": {
@@ -340,7 +340,7 @@
   {
     "meta": {
       "type": "EiffelConfidenceLevelModifiedEvent",
-      "version": "1.0",
+      "version": "1.0.0",
       "time": 6000,
       "id": "aaaaaaaa-bbbb-cccc-dddd-eeeeeeeeee15",
       "source": {
@@ -361,7 +361,7 @@
   {
     "meta": {
       "type": "EiffelConfidenceLevelModifiedEvent",
-      "version": "1.0",
+      "version": "1.0.0",
       "time": 207000,
       "id": "aaaaaaaa-bbbb-cccc-dddd-eeeeeeeeee16",
       "source": {
diff --git a/schemas/EiffelActivityCanceledEvent.json b/schemas/EiffelActivityCanceledEvent.json
index b95d5251..b74ff796 100644
--- a/schemas/EiffelActivityCanceledEvent.json
+++ b/schemas/EiffelActivityCanceledEvent.json
@@ -12,7 +12,8 @@
           "type": "string"
         },
         "version": {
-          "type": "string"
+          "type": "string",
+          "pattern": "^(\\d+\\.)(\\d+\\.)(\\d+)$"
         },
         "time": {
           "type": "integer"
diff --git a/schemas/EiffelActivityFinishedEvent.json b/schemas/EiffelActivityFinishedEvent.json
index 06c988bd..543fac9a 100644
--- a/schemas/EiffelActivityFinishedEvent.json
+++ b/schemas/EiffelActivityFinishedEvent.json
@@ -12,7 +12,8 @@
           "type": "string"
         },
         "version": {
-          "type": "string"
+          "type": "string",
+          "pattern": "^(\\d+\\.)(\\d+\\.)(\\d+)$"
         },
         "time": {
           "type": "integer"
diff --git a/schemas/EiffelActivityStartedEvent.json b/schemas/EiffelActivityStartedEvent.json
index b1791fa7..774c9212 100644
--- a/schemas/EiffelActivityStartedEvent.json
+++ b/schemas/EiffelActivityStartedEvent.json
@@ -12,7 +12,8 @@
           "type": "string"
         },
         "version": {
-          "type": "string"
+          "type": "string",
+          "pattern": "^(\\d+\\.)(\\d+\\.)(\\d+)$"
         },
         "time": {
           "type": "integer"
diff --git a/schemas/EiffelActivityTriggeredEvent.json b/schemas/EiffelActivityTriggeredEvent.json
index 71e65e1e..cd2742f4 100644
--- a/schemas/EiffelActivityTriggeredEvent.json
+++ b/schemas/EiffelActivityTriggeredEvent.json
@@ -12,7 +12,8 @@
           "type": "string"
         },
         "version": {
-          "type": "string"
+          "type": "string",
+          "pattern": "^(\\d+\\.)(\\d+\\.)(\\d+)$"
         },
         "time": {
           "type": "integer"
diff --git a/schemas/EiffelArtifactCreatedEvent.json b/schemas/EiffelArtifactCreatedEvent.json
index c1925776..1ce730bf 100644
--- a/schemas/EiffelArtifactCreatedEvent.json
+++ b/schemas/EiffelArtifactCreatedEvent.json
@@ -12,7 +12,8 @@
           "type": "string"
         },
         "version": {
-          "type": "string"
+          "type": "string",
+          "pattern": "^(\\d+\\.)(\\d+\\.)(\\d+)$"
         },
         "time": {
           "type": "integer"
diff --git a/schemas/EiffelArtifactPublishedEvent.json b/schemas/EiffelArtifactPublishedEvent.json
index e7ed65a2..ca63ced2 100644
--- a/schemas/EiffelArtifactPublishedEvent.json
+++ b/schemas/EiffelArtifactPublishedEvent.json
@@ -12,7 +12,8 @@
           "type": "string"
         },
         "version": {
-          "type": "string"
+          "type": "string",
+          "pattern": "^(\\d+\\.)(\\d+\\.)(\\d+)$"
         },
         "time": {
           "type": "integer"
diff --git a/schemas/EiffelConfidenceLevelModifiedEvent.json b/schemas/EiffelConfidenceLevelModifiedEvent.json
index 8a1ff860..f10e4488 100644
--- a/schemas/EiffelConfidenceLevelModifiedEvent.json
+++ b/schemas/EiffelConfidenceLevelModifiedEvent.json
@@ -12,7 +12,8 @@
           "type": "string"
         },
         "version": {
-          "type": "string"
+          "type": "string",
+          "pattern": "^(\\d+\\.)(\\d+\\.)(\\d+)$"
         },
         "time": {
           "type": "integer"