diff --git a/Dockerfile b/Dockerfile
index 8018a6cc..fc01903e 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -2,7 +2,7 @@
 #
 # SPDX-License-Identifier: Apache-2.0
 
-ARG TARGET_GO_VERSION=1.26.3
+ARG TARGET_GO_VERSION=1.26.3@sha256:2d6c80227255c3112a4d08e67ba98e58efd3846daf15d9d7d4c389565d881b1a
 
 # Build the manager binary
 FROM --platform=$BUILDPLATFORM golang:${TARGET_GO_VERSION} AS builder