diff --git a/images/caph/Dockerfile b/images/caph/Dockerfile
index afd4299ef..c890858f9 100644
--- a/images/caph/Dockerfile
+++ b/images/caph/Dockerfile
@@ -13,7 +13,7 @@
 # limitations under the License.
 
 # Build the manager binary
-FROM --platform=${BUILDPLATFORM} docker.io/library/golang:1.21.3-bullseye@sha256:3633196d3361008a56ed070a33879f5d563e77436031446981796c584629198b as build
+FROM --platform=${BUILDPLATFORM} docker.io/library/golang:1.21.3-bullseye@sha256:27b021393d0e0dfffc6cd6cca5e7836ac59f5ac98724c5d6b3b0a82199d275c5 as build
 ARG TARGETOS TARGETARCH
 
 COPY . /src/cluster-api-provider-hetzner