diff --git a/.github/workflow_data/devbuild.py b/.github/workflow_data/devbuild.py
index c4b9408fb..ba30eb9ae 100644
--- a/.github/workflow_data/devbuild.py
+++ b/.github/workflow_data/devbuild.py
@@ -12,6 +12,20 @@ if __name__ == "__main__":
     with open(os.environ["GITHUB_EVENT_PATH"], "r") as f:
         event = json.load(f)
 
+    release = "release"
+    before = event["before"][:8]
+    after = event["after"][:8]
+    compare = event["compare"].rsplit("/", 1)[0]
+
+    # Saved before uploading new devbuild
+    with open("previndex.json", "r") as f:
+        previndex = json.load(f)
+    for channel in previndex["channels"]:
+        if channel["id"] == "release":
+            release = channel["versions"][0]["version"]
+        if channel["id"] == "development":
+            before = channel["versions"][0]["version"]
+
     requests.post(
         os.environ["BUILD_WEBHOOK"],
         headers={"Accept": "application/json", "Content-Type": "application/json"},
@@ -25,19 +39,23 @@ if __name__ == "__main__":
                     "color": 16751147,
                     "fields": [
                         {
-                            "name": "Changes since last commit:",
-                            "value": f"[Compare {event['before'][:7]} to {event['after'][:7]}]({event['compare']})"
+                            "name": "Diff since last build:",
+                            "value": f"[Compare {before} to {after}]({compare}/{before}...{after})"
                         },
                         {
-                            "name": "Changes since last release:",
-                            "value": f"[Compare release to {event['after'][:7]}]({event['compare'].rsplit('/', 1)[0] + '/release...' + event['after']})"
+                            "name": "Diff since last release:",
+                            "value": f"[Compare {release} to {after}]({compare}/{release}...{after})"
+                        },
+                        {
+                            "name": "Changelog since last release:",
+                            "value": f"[Changes since {release}]({event['repository']['html_url']}/blob/{after}/ChangeLog.md)"
                         },
                         {
                             "name": "Download artifacts:",
                             "value": f"- [Download Firmware TGZ]({artifact_tgz})\n- [SDK (for development)]({artifact_sdk})"
                         }
                     ],
-                    "timestamp": dt.datetime.utcnow().isoformat()
+                    "timestamp": dt.datetime.now(dt.UTC).isoformat()
                 }
             ],
         },
diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index cacac7ff9..c4e3dfea1 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -97,6 +97,7 @@ jobs:
           INDEXER_URL: ${{ secrets.INDEXER_URL }}
         if: ${{ env.INDEXER_URL != '' && github.event_name == 'push' && ((github.ref_name == 'dev' && !contains(github.event.head_commit.message, '--nobuild')) || startsWith(github.ref, 'refs/tags/')) }}
         run: |
+          curl "${{ secrets.INDEXER_URL }}"/firmware/directory.json > previndex.json
           FILES=$(for ARTIFACT in $(find artifacts -maxdepth 1 -not -type d); do echo "-F files=@${ARTIFACT}"; done)
           curl --fail -L -H "Token: ${{ secrets.INDEXER_TOKEN }}" \
               -F "branch=${BRANCH_NAME}" \