diff --git a/Dockerfile b/Dockerfile
index 0218a76..c7c53ed 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM ghcr.io/hadolint/hadolint:v2.15.0-debian
+FROM ghcr.io/hadolint/hadolint:v2.15.1-debian@sha256:9a3944b7fddcb947d1ffd90829ac1a6e5c30479223358f249d8b96c7d0019e27
 
 COPY LICENSE README.md problem-matcher.json /
 COPY hadolint.sh /usr/local/bin/hadolint.sh