diff --git a/.github/workflows/multiarch.yml b/.github/workflows/multiarch.yml
index a8cae3a..a8c2b2b 100644
--- a/.github/workflows/multiarch.yml
+++ b/.github/workflows/multiarch.yml
@@ -13,7 +13,7 @@ jobs:
     runs-on: ubuntu-latest
     env:
       IMAGE_TAG: ${{ secrets.DOCKERHUB_OWNER }}/telegram-bot-api
-      ALPINE_VERSION: 3.20
+      ALPINE_VERSION: '3.20'
     strategy:
       matrix:
         arch: