diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index 13fe55941..3d61d62d4 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -172,7 +172,7 @@ jobs:
 
       - name: Prepare Host
         run: |
-          curl -LO https://dl.k8s.io/release/v1.31.5/bin/linux/amd64/kubectl
+          curl -LO https://dl.k8s.io/release/v1.31.6/bin/linux/amd64/kubectl
           chmod +x ./kubectl
           sudo mv ./kubectl /usr/local/bin/kubectl
 
diff --git a/images/test-runner/Makefile b/images/test-runner/Makefile
index a449a7cdf..88cc27160 100644
--- a/images/test-runner/Makefile
+++ b/images/test-runner/Makefile
@@ -50,7 +50,7 @@ image:
 		--build-arg BASE_IMAGE=${NGINX_BASE_IMAGE} \
 		--build-arg GOLANG_VERSION=${GO_VERSION} \
 		--build-arg ETCD_VERSION=3.5.13-0 \
-		--build-arg K8S_RELEASE=v1.31.5 \
+		--build-arg K8S_RELEASE=v1.31.6 \
 		--build-arg RESTY_CLI_VERSION=0.27 \
 		--build-arg RESTY_CLI_SHA=e5f4f3128af49ba5c4d039d0554e5ae91bbe05866f60eccfa96d3653274bff90 \
 		--build-arg LUAROCKS_VERSION=3.8.0 \
@@ -71,7 +71,7 @@ build: ensure-buildx
 		--build-arg BASE_IMAGE=${NGINX_BASE_IMAGE} \
 		--build-arg GOLANG_VERSION=${GO_VERSION} \
 		--build-arg ETCD_VERSION=3.5.13-0 \
-		--build-arg K8S_RELEASE=v1.31.5 \
+		--build-arg K8S_RELEASE=v1.31.6 \
 		--build-arg RESTY_CLI_VERSION=0.27 \
 		--build-arg RESTY_CLI_SHA=e5f4f3128af49ba5c4d039d0554e5ae91bbe05866f60eccfa96d3653274bff90 \
 		--build-arg LUAROCKS_VERSION=3.8.0 \