diff --git a/.github/workflows/publish.yml b/.github/workflows/publish.yml
index b0714d1..53942fc 100644
--- a/.github/workflows/publish.yml
+++ b/.github/workflows/publish.yml
@@ -7,7 +7,7 @@ on:
 
 env:
   REGISTRY: ghcr.io
-  IMAGE_NAME: ${{ github.repository }}
+  IMAGE_NAME: ${{ github.repository | toLower() }}
 
 jobs:
   build-and-push-image: