diff --git a/.github/workflows/build-mytoolbx.yml b/.github/workflows/build-mytoolbx.yml
index e5abb4e..2e4f78c 100644
--- a/.github/workflows/build-mytoolbx.yml
+++ b/.github/workflows/build-mytoolbx.yml
@@ -58,7 +58,7 @@ jobs:
       # https://github.com/macbre/push-to-ghcr/issues/12
       - name: Lowercase Registry
         id: registry_case
-        uses: ASzc/change-string-case-action@v5
+        uses: ASzc/change-string-case-action@v6
         with:
           string: ${{ env.IMAGE_REGISTRY }}