diff --git a/Dockerfile b/Dockerfile
index 5366321..aaa4dec 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,5 +1,5 @@
 # Build the manager binary
-FROM --platform=$BUILDPLATFORM golang:1.21.2 as builder
+FROM --platform=$BUILDPLATFORM golang:1.21.3 as builder
 
 # Add GRPC healthchecker
 # TODO when Kube 1.27 or higher is a prerequisite this binary can be removed.