diff --git a/Dockerfile.cli b/Dockerfile.cli
index 12a62bd..8c1916f 100644
--- a/Dockerfile.cli
+++ b/Dockerfile.cli
@@ -1,4 +1,4 @@
-FROM ghcr.io/cybozu/golang:1.22-jammy as builder
+FROM ghcr.io/cybozu/golang:1.23-jammy as builder
 WORKDIR /work
 COPY go.mod go.mod
 COPY go.sum go.sum
diff --git a/Dockerfile.daemon b/Dockerfile.daemon
index 659e4fe..791433f 100644
--- a/Dockerfile.daemon
+++ b/Dockerfile.daemon
@@ -1,5 +1,5 @@
 ARG FLATCAR_VERSION
-FROM ghcr.io/cybozu/golang:1.22-jammy as builder
+FROM ghcr.io/cybozu/golang:1.23-jammy as builder
 
 WORKDIR /work
 COPY go.mod go.mod
diff --git a/Makefile b/Makefile
index 7a34c22..36bf3a7 100644
--- a/Makefile
+++ b/Makefile
@@ -6,8 +6,8 @@ ENVTEST ?= $(BIN_DIR)/setup-envtest
 # Tool versions
 MDBOOK_VERSION = 0.4.27
 PROTOC_VERSION = 24.2
-PROTOC_GEN_GO_VERSION = 1.31.0
-PROTOC_GEN_GO_GRPC_VERSION = 1.3.0
+PROTOC_GEN_GO_VERSION = 1.35.2
+PROTOC_GEN_GO_GRPC_VERSION = 1.5.1
 PROTOC_GEN_DOC_VERSION = 1.5.1
 MDBOOK := $(BIN_DIR)/mdbook
 
diff --git a/Makefile.versions b/Makefile.versions
index b0c6f50..be7b988 100644
--- a/Makefile.versions
+++ b/Makefile.versions
@@ -1,5 +1,5 @@
-E2ETEST_K8S_VERSION  := 1.30.0
+E2ETEST_K8S_VERSION  := 1.30.3
 # ref to https://github.com/orgs/flatcar/packages/container/package/flatcar-sdk-amd64
-FLATCAR_VERSION := 3815.2.2
+FLATCAR_VERSION := 4081.0.0
 KIND_VERSION := 0.23.0
 KUSTOMIZE_VERSION := 5.4.1
diff --git a/go.mod b/go.mod
index 5040d7e..f53e91e 100644
--- a/go.mod
+++ b/go.mod
@@ -1,8 +1,8 @@
 module github.com/cybozu-go/necoperf
 
-go 1.22.0
+go 1.23.0
 
-toolchain go1.22.6
+toolchain go1.23.3
 
 require (
 	github.com/google/uuid v1.6.0
@@ -21,8 +21,8 @@ require (
 	k8s.io/apimachinery v0.30.1
 	k8s.io/client-go v0.30.1
 	k8s.io/cri-api v0.30.1
-	k8s.io/kubernetes v1.30.1
-	sigs.k8s.io/controller-runtime v0.18.4
+	k8s.io/kubernetes v0.30.1
+	sigs.k8s.io/controller-runtime v0.19.1
 )
 
 require (