diff --git a/test/Dockerfile.jammy b/test/Dockerfile.jammy
index 8e4ff2b183..383d25cd6e 100644
--- a/test/Dockerfile.jammy
+++ b/test/Dockerfile.jammy
@@ -63,7 +63,7 @@ RUN install-tool helm v3.13.2
 RUN install-tool helmfile v0.159.0
 
 # renovate: datasource=github-releases packageName=kubernetes-sigs/kustomize
-RUN install-tool kustomize 5.2.1
+RUN install-tool kustomize 5.3.0
 
 # renovate: datasource=github-tags packageName=NixOS/nix
 RUN install-tool nix 2.19.2
diff --git a/test/latest/Dockerfile.arm64 b/test/latest/Dockerfile.arm64
index cbb2511e93..de3b1db941 100644
--- a/test/latest/Dockerfile.arm64
+++ b/test/latest/Dockerfile.arm64
@@ -70,7 +70,7 @@ RUN install-tool helmfile v0.159.0
 FROM base as test-kustomize
 
 # renovate: datasource=github-releases packageName=kubernetes-sigs/kustomize
-RUN install-tool kustomize 5.2.1
+RUN install-tool kustomize 5.3.0
 
 #--------------------------------------
 # Image: terraform