diff --git a/Dockerfile b/Dockerfile
index bb63d0f..cc7a43c 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,5 +1,5 @@
 # Build the manager binary
-FROM golang:1.18 as builder
+FROM golang:1.22@sha256:094e47ef90125eb49dfbc67d3480b56ee82ea9b05f50b750b5e85fab9606c2de as builder
 
 WORKDIR /workspace
 # Copy the Go Modules manifests