diff --git a/Dockerfile b/Dockerfile
index 97b987a..1ec07ca 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,5 +1,5 @@
 # Build the manager binary
-FROM golang:1.21 as builder
+FROM golang:1.27@sha256:2920bb124f1a2e12a1d39f0cab756ae0068441ee1da7655dec7f5e374944095b as builder
 
 WORKDIR /workspace
 # Copy the Go Modules manifests