diff --git a/contracts/asset-proxy/CHANGELOG.json b/contracts/asset-proxy/CHANGELOG.json
index 813af4ed91..4945db5c77 100644
--- a/contracts/asset-proxy/CHANGELOG.json
+++ b/contracts/asset-proxy/CHANGELOG.json
@@ -1,4 +1,13 @@
 [
+    {
+        "version": "2.2.0",
+        "changes": [
+            {
+                "note": "Add `LibAssetProxyIds` and `LibAssetData` contracts",
+                "pr": 1835
+            }
+        ]
+    },
     {
         "timestamp": 1558712885,
         "version": "2.1.5",
diff --git a/contracts/extensions/CHANGELOG.json b/contracts/extensions/CHANGELOG.json
index ee2790ff16..26103fe705 100644
--- a/contracts/extensions/CHANGELOG.json
+++ b/contracts/extensions/CHANGELOG.json
@@ -1,4 +1,17 @@
 [
+    {
+        "version": "4.0.0",
+        "changes": [
+            {
+                "note": "Rename `OrderValidator` to `OrderValidationUtils`",
+                "pr": 1835
+            },
+            {
+                "note": "Create `DevUtils` contract",
+                "pr": 1835
+            }
+        ]
+    },
     {
         "timestamp": 1558712885,
         "version": "3.1.5",