diff --git a/.github/workflows/build-and-push-docker-image.yml b/.github/workflows/build-and-push-docker-image.yml
index 7022ae5..fda55e5 100644
--- a/.github/workflows/build-and-push-docker-image.yml
+++ b/.github/workflows/build-and-push-docker-image.yml
@@ -9,8 +9,8 @@ on:   # yamllint disable-line rule:truthy
   workflow_dispatch:
     inputs:
       tag:
-        description: Docker image tag (optional, defaults to Git ref)
-        required: false
+        description: Docker image tag
+        required: true
         type: string
 
 jobs: