diff --git a/klt-cert-manager/Makefile b/klt-cert-manager/Makefile
index 9d086346e1..51fdf23fe7 100644
--- a/klt-cert-manager/Makefile
+++ b/klt-cert-manager/Makefile
@@ -110,7 +110,7 @@ ENVTEST ?= $(LOCALBIN)/setup-envtest
 ## Tool Versions
 
 # renovate: datasource=github-tags depName=kubernetes-sigs/kustomize
-KUSTOMIZE_VERSION ?= v3.8.7
+KUSTOMIZE_VERSION ?= v4.5.7
 # renovate: datasource=github-releases depName=kubernetes-sigs/controller-tools
 CONTROLLER_TOOLS_VERSION ?= v0.9.2