diff --git a/README.md b/README.md
index b9c8091..24a8b36 100644
--- a/README.md
+++ b/README.md
@@ -67,11 +67,18 @@ In some cases, a fee may be levied for 'official copies' of procurement document
 
 In this case, the fee should be modelled as a **submission** fee, as submission is only possible when this document access fee has been paid.
 
-## To do
-
-* participation / submission terminology
-* finalize codelist
-
 ## Issues
 
 Report issues for this extension in the [ocds-extensions repository](https://github.com/open-contracting/ocds-extensions/issues), putting the extension's name in the issue's title.
+
+## Changelog
+
+### v1.1.3
+
+* Disallow `ParticipationFee.type` from having null in its array of strings
+* Allow `ParticipationFee.description` to be null
+* Add `ParticipationFee.id` field
+* Add description to `ParticipationFee`
+* Add title and description to `ParticipationFee.value`
+* Add participationFeeType.csv codelist for `ParticipationFee.type`
+* Add tests and tidy code
diff --git a/release-schema.json b/release-schema.json
index 3bf2029..a7425be 100644
--- a/release-schema.json
+++ b/release-schema.json
@@ -2,6 +2,7 @@
   "definitions": {
     "ParticipationFee": {
       "title": "Participation fee",
+      "description": "A fee applicable to bidders wishing to participate in the tender process. Fees may apply for access to bidding documents, for the submission of bids or there may be a win fee payable by the successful bidder.",
       "type": "object",
       "properties": {
         "id": {
@@ -29,6 +30,8 @@
           "openCodelist": false
         },
         "value": {
+          "title": "Value",
+          "description": "The monetary value of this fee.",
           "$ref": "#/definitions/Value"
         },
         "description": {