diff --git a/.github/workflows/docker-publish.yml b/.github/workflows/docker-publish.yml
index 5500a1b..3a1851e 100644
--- a/.github/workflows/docker-publish.yml
+++ b/.github/workflows/docker-publish.yml
@@ -85,7 +85,7 @@ jobs:
             env.azul_docker_registry,
             env.azul_docker_pycharm_image
           ) }}"
-          cache-to: "${{ format(
+          cache-to: "${{ github.event_name == 'pull_request' && '' || format(
             'type=registry,ref={0}{1}_buildcache,mode=max',
             env.azul_docker_registry,
             env.azul_docker_pycharm_image