diff --git a/.gitea/workflows/ci-cd.yml b/.gitea/workflows/ci-cd.yml
index a4bd581..5592f61 100644
--- a/.gitea/workflows/ci-cd.yml
+++ b/.gitea/workflows/ci-cd.yml
@@ -40,8 +40,10 @@ jobs:
 
       - name: Push image
         run: |
-          echo "${{ secrets.REGISTRY_PASSWORD }}" | \
-            docker login ${{ secrets.REGISTRY_URL }} -u ${{ secrets.REGISTRY_USERNAME }} --password-stdin
+          if [ -n "${{ secrets.REGISTRY_USERNAME }}" ]; then
+            echo "${{ secrets.REGISTRY_PASSWORD }}" | \
+              docker login ${{ secrets.REGISTRY_URL }} -u ${{ secrets.REGISTRY_USERNAME }} --password-stdin
+          fi
           docker push ${{ secrets.REGISTRY_URL }}/k8s-version-tracker:${{ github.sha }}
           docker push ${{ secrets.REGISTRY_URL }}/k8s-version-tracker:latest