diff --git a/contracts/erc20-bridge-sampler/CHANGELOG.json b/contracts/erc20-bridge-sampler/CHANGELOG.json
index c658665484..8e91fd1d2c 100644
--- a/contracts/erc20-bridge-sampler/CHANGELOG.json
+++ b/contracts/erc20-bridge-sampler/CHANGELOG.json
@@ -4,7 +4,7 @@
         "changes": [
             {
                 "note": "Created package.",
-                "pr": "TODO"
+                "pr": 2344
             }
         ]
     }
diff --git a/contracts/erc20/CHANGELOG.json b/contracts/erc20/CHANGELOG.json
index c9aa042288..5d5d1e870f 100644
--- a/contracts/erc20/CHANGELOG.json
+++ b/contracts/erc20/CHANGELOG.json
@@ -17,7 +17,7 @@
             },
             {
                 "note": "Add `decimals()` to `LibERC20Token`.",
-                "pr": "TODO"
+                "pr": 2344
             }
         ],
         "timestamp": 1574030254