diff --git a/src/fixtures/config_upgrade_from_4.0.0_to_4.0.1-snapshot.json b/src/fixtures/config_upgrade_from_4.0.0_to_4.0.1-snapshot.json
index 30990d109cad1..8767232dcdc1c 100644
--- a/src/fixtures/config_upgrade_from_4.0.0_to_4.0.1-snapshot.json
+++ b/src/fixtures/config_upgrade_from_4.0.0_to_4.0.1-snapshot.json
@@ -13,7 +13,7 @@
          {
             "_index": ".kibana",
             "_type": "config",
-            "_id": "4.0.1-snapshot",
+            "_id": "4.0.1-SNAPSHOT",
             "_score": 1,
             "_source": {
                "buildNum": 5921,
diff --git a/src/plugins/elasticsearch/lib/__tests__/is_upgradeable.js b/src/plugins/elasticsearch/lib/__tests__/is_upgradeable.js
index ea9bfc07f6e37..b393b049370d6 100644
--- a/src/plugins/elasticsearch/lib/__tests__/is_upgradeable.js
+++ b/src/plugins/elasticsearch/lib/__tests__/is_upgradeable.js
@@ -40,8 +40,8 @@ describe('plugins/elasticsearch', function () {
     upgradeDoc('4.0.0-rc2', '4.0.2', true);
     upgradeDoc('4.0.1', '4.1.0-rc', true);
     upgradeDoc('4.0.0-rc1', '4.0.0', true);
-    upgradeDoc('4.0.0-rc1-snapshot', '4.0.0', false);
-    upgradeDoc('4.1.0-rc1-snapshot', '4.1.0-rc1', false);
+    upgradeDoc('4.0.0-rc1-SNAPSHOT', '4.0.0', false);
+    upgradeDoc('4.1.0-rc1-SNAPSHOT', '4.1.0-rc1', false);
 
     it('should handle missing _id field', function () {
       let doc = {
diff --git a/src/plugins/elasticsearch/lib/__tests__/upgrade_config.js b/src/plugins/elasticsearch/lib/__tests__/upgrade_config.js
index debe242ee8919..9a9d72ff32c2b 100644
--- a/src/plugins/elasticsearch/lib/__tests__/upgrade_config.js
+++ b/src/plugins/elasticsearch/lib/__tests__/upgrade_config.js
@@ -92,7 +92,7 @@ describe('plugins/elasticsearch', function () {
     });
 
     it('should resolve with undefined if the nothing is upgradeable', function () {
-      const response = { hits: { hits: [ { _id: '4.0.1-beta1' }, { _id: '4.0.0-snapshot1' } ] } };
+      const response = { hits: { hits: [ { _id: '4.0.1-beta1' }, { _id: '4.0.0-SNAPSHOT1' } ] } };
       return upgrade(response).then(function (resp) {
         expect(resp).to.be(undefined);
       });
diff --git a/src/plugins/elasticsearch/lib/__tests__/version_satisfies.js b/src/plugins/elasticsearch/lib/__tests__/version_satisfies.js
index 20438a445d887..c97e32d81992c 100644
--- a/src/plugins/elasticsearch/lib/__tests__/version_satisfies.js
+++ b/src/plugins/elasticsearch/lib/__tests__/version_satisfies.js
@@ -21,9 +21,9 @@ const versionChecks = [
   ['2.0.1', '^2.0.0', true],
   ['2.1.1', '^2.1.0', true],
   ['2.2.0', '^2.1.0', true],
-  ['3.0.0-snapshot', '^2.1.0', false],
+  ['3.0.0-SNAPSHOT', '^2.1.0', false],
   ['3.0.0', '^2.1.0', false],
-  ['2.10.20-snapshot', '^2.10.20', true],
+  ['2.10.20-SNAPSHOT', '^2.10.20', true],
   ['2.10.999', '^2.10.20', true],
 ];
 
diff --git a/tasks/config/build.js b/tasks/config/build.js
index c1778cd4dbf8e..2cceff4957bbe 100644
--- a/tasks/config/build.js
+++ b/tasks/config/build.js
@@ -11,5 +11,5 @@ export default (grunt) => {
 };
 
 function buildVersion(isRelease, version) {
-  return isRelease ? version : `${version}-snapshot`;
+  return isRelease ? version : `${version}-SNAPSHOT`;
 }