diff --git a/.github/workflows/pr-postbuild.yml b/.github/workflows/pr-postbuild.yml
deleted file mode 100644
index 65078cd1d..000000000
--- a/.github/workflows/pr-postbuild.yml
+++ /dev/null
@@ -1,37 +0,0 @@
-name: PR Post Build
-on:
-  workflow_run:
-    workflows: [PR Build]
-    types:
-    - completed
-jobs:
-  postbuild:
-    name: Update PR
-    runs-on: ubuntu-latest
-    if: github.event.workflow_run.conclusion == 'success'
-    steps:
-    - name: Install Python modules
-      run: pip install PyGithub
-    - name: Update PR
-      run: |
-        from github import Auth, Github
-        import json
-
-        event = json.loads('${{ toJSON(github.event) }}')
-        gh = Github(auth=Auth.Token("${{ secrets.GITHUB_TOKEN }}"))
-        repo = gh.get_repo("${{ github.repository }}")
-
-        for pull in event["workflow_run"]["pull_requests"]:
-          author = pull["head"]["repo"]["name"]
-          head = pull["head"]["sha"]
-          cmp = repo.compare(pull["base"]["ref"], f"{author}:{head}")
-
-          if cmp.status != "behind":
-            pull = repo.get_pull(pull["number"])
-            ready = False
-            for label in pull.labels:
-              if label.name == "S-ready":
-                ready = True
-            if not ready:
-              pull.add_to_labels("S-ready")
-      shell: python
diff --git a/.github/workflows/pr-update.yml b/.github/workflows/pr-update.yml
new file mode 100644
index 000000000..02bfb2cd8
--- /dev/null
+++ b/.github/workflows/pr-update.yml
@@ -0,0 +1,47 @@
+name: PR Post Build
+on:
+  workflow_run:
+    workflows: [PR Build]
+    types:
+    - completed
+jobs:
+  postbuild:
+    name: Update PR
+    runs-on: ubuntu-latest
+    if: github.event.workflow_run.conclusion == 'success'
+    steps:
+    - name: Install Python modules
+      run: pip install PyGithub
+    - name: Update PR
+      run: |
+        from github import Auth, Github
+        import json
+        from urllib.request import urlopen
+        from zipfile import ZipFile
+
+        event = json.loads('''${{ toJSON(github.event.workflow_run) }}''')
+        gh = Github(auth=Auth.Token("${{ secrets.GITHUB_TOKEN }}"))
+        repo = gh.get_repo("${{ github.repository }}")
+        run = repo.get_workflow_run(event["id"])
+        info = None
+
+        for artifact in run.get_artifacts():
+          if artifact.name == "build-info":
+            info = artifact
+
+        with urlopen(info.archive_download_url) as info:
+          zip = ZipFile(info)
+          with zip.open("build-info.json") as info:
+            info = json.load(info)
+
+        cmp = repo.compare(info["base"], f"{info["author"]}:{info["head"]}")
+
+        if cmp.status != "behind":
+          pull = repo.get_pull(info["pr"])
+          ready = False
+          for label in pull.labels:
+            if label.name == "S-ready":
+              ready = True
+          if not ready:
+            pull.add_to_labels("S-ready")
+      shell: python
diff --git a/.github/workflows/pr.yml b/.github/workflows/pr.yml
index 831ae8410..a34a26046 100644
--- a/.github/workflows/pr.yml
+++ b/.github/workflows/pr.yml
@@ -26,3 +26,27 @@ jobs:
     name: Build
     uses: ./.github/workflows/ci-mac.yml
     needs: prebuild
+  postbuild:
+    name: Post build
+    runs-on: ubuntu-latest
+    needs: [build-windows, build-linux, build-mac]
+    steps:
+    - name: Generate build information
+      run: |
+        import json
+
+        info = {
+          "pr": ${{ github.event.number }},
+          "base": "${{ github.base_ref }}",
+          "head": "${{ github.event.pull_request.head.sha }}",
+          "author": "${{ github.event.pull_request.head.user.login }}"
+        }
+
+        with open("build-info.json", "w") as fp:
+          json.dump(info, fp)
+      shell: python
+    - name: Upload build information
+      uses: actions/upload-artifact@v4
+      with:
+        name: build-info
+        path: build-info.json