diff --git a/test/Dockerfile.jammy b/test/Dockerfile.jammy
index f80eee97bf..5868daa6c4 100644
--- a/test/Dockerfile.jammy
+++ b/test/Dockerfile.jammy
@@ -54,7 +54,7 @@ RUN install-tool flux v2.2.2
 RUN install-tool git-lfs v3.4.1
 
 # renovate: datasource=docker versioning=docker
-RUN install-tool golang 1.21.5
+RUN install-tool golang 1.21.6
 
 # renovate: datasource=github-releases packageName=helm/helm
 RUN install-tool helm v3.13.3
diff --git a/test/golang/Dockerfile b/test/golang/Dockerfile
index faed30d8ce..7344dfd0d8 100644
--- a/test/golang/Dockerfile
+++ b/test/golang/Dockerfile
@@ -28,7 +28,7 @@ WORKDIR /test
 FROM base as testa
 
 # renovate: datasource=docker versioning=docker
-RUN install-tool golang 1.21.5
+RUN install-tool golang 1.21.6
 
 USER 1000
 
@@ -76,7 +76,7 @@ RUN prepare-tool golang
 USER 1000
 
 # renovate: datasource=docker versioning=docker
-RUN install-tool golang 1.21.5
+RUN install-tool golang 1.21.6
 
 
 RUN set -ex; cd a; go get -d ./...; cat go.sum; go mod tidy; cat go.sum
diff --git a/test/golang/Dockerfile.arm64 b/test/golang/Dockerfile.arm64
index 0440aa29a8..a6fdc07d7e 100644
--- a/test/golang/Dockerfile.arm64
+++ b/test/golang/Dockerfile.arm64
@@ -26,7 +26,7 @@ RUN install-tool git v2.43.0
 FROM base as test-golang
 
 # renovate: datasource=docker versioning=docker
-RUN install-tool golang 1.21.5
+RUN install-tool golang 1.21.6
 
 #--------------------------------------
 # Image: final