diff --git a/.gitea/workflows/size.yml b/.gitea/workflows/size.yml
new file mode 100644
index 0000000..ca4befb
--- /dev/null
+++ b/.gitea/workflows/size.yml
@@ -0,0 +1,15 @@
+name: Label PRs based on size
+
+on: [pull_request]
+
+jobs:
+  add_pr_size_label:
+    runs-on: ubuntu-latest
+    name: Check PR size
+
+    steps:
+      - name: Label and comment PR
+        uses: boschresearch/pr-size-labeler@v5.0.1
+        # Uncomment these lines if you want to use your own custom configuration
+        # with:
+        #   bucketConfigFile: "<PATH_TO_YOUR_BUCKET_CONFIG>"