diff --git a/.github/workflows/docker-build.yml b/.github/workflows/docker-build.yml
index ae341e5b..ff13f60e 100644
--- a/.github/workflows/docker-build.yml
+++ b/.github/workflows/docker-build.yml
@@ -36,6 +36,9 @@ jobs:
             echo "TAG=dev" >> $GITHUB_ENV
           fi
 
+      - name: Convert repository name to lowercase
+        run: echo "REPO_NAME=$(echo '${{ github.repository }}' | tr '[:upper:]' '[:lower:]')" >> $GITHUB_ENV
+
       - name: Build and push Docker image
         uses: docker/build-push-action@v5
         with:
@@ -43,5 +46,5 @@ jobs:
           push: true
           platforms: linux/amd64,linux/arm64
           tags: |
-            ghcr.io/${{ github.repository }}:${{ env.TAG }}
-            ghcr.io/${{ github.repository }}:${{ github.sha }}
+            ghcr.io/${{ env.REPO_NAME }}:${{ env.TAG }}
+            ghcr.io/${{ env.REPO_NAME }}:${{ github.sha }}