diff --git a/action.yml b/action.yml
index 85208c1..1ced924 100644
--- a/action.yml
+++ b/action.yml
@@ -80,7 +80,7 @@ inputs:
 
 runs:
   using: 'docker'
-  image: 'Dockerfile'
+  image: 'docker://ghcr.io/step-security/codeowners-validator:v0.7.4@sha256:fb2e001c805725314b3de998995dfe84e4a6d9badda036ca9d6c791a0360942b' #v0.7.4
   env:
     ENVS_PREFIX: "INPUT"