diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index d129e19..0bb766b 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -13,7 +13,7 @@ image: buildtool/build-tools:${BUILDTOOLS_VERSION}
 
 run-pre-commit:
   stage: .pre
-  image: unbound/pre-commit
+  image: unbound/pre-commit@sha256:92fce44d8a7e40b4d30b777e50a5189d9b3031f72e563e3f3c9deb49c75f35c0
   variables:
     PRE_COMMIT_HOME: ${CI_PROJECT_DIR}/.cache/pre-commit
   cache: