diff --git a/.gitea/workflows/size.yml b/.gitea/workflows/size.yml
index 60f3b80..4197b4a 100644
--- a/.gitea/workflows/size.yml
+++ b/.gitea/workflows/size.yml
@@ -9,7 +9,7 @@ jobs:
 
     steps:
       - name: Check out code
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
 
       - name: Label and comment PR
         uses: boschresearch/pr-size-labeler@v5.0.2