diff --git a/Dockerfile b/Dockerfile
index 8f201bb..2af6653 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
diff --git a/ci.Dockerfile b/ci.Dockerfile
index 891f5d7..43399e8 100644
--- a/ci.Dockerfile
+++ b/ci.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