diff --git a/build/Dockerfile b/build/Dockerfile
index 5a7ba1b..926b9ba 100644
--- a/build/Dockerfile
+++ b/build/Dockerfile
@@ -51,7 +51,7 @@ ARG HELM_VERSION=v3.15.2
 # renovate: datasource=github-tags depName=kubernetes/kubernetes
 ARG KUBECTL_VERSION=v1.30.2
 # renovate: datasource=github-tags depName=hashicorp/terraform
-ARG TERRAFORM_VERSION=v1.8.5
+ARG TERRAFORM_VERSION=v1.9.0
 # renovate: datasource=github-releases depName=terraform-linters/tflint
 ARG TFLINT_VERSION=v0.51.1
 ARG KUSTOMIZE_VERSION=v5.3.0