diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index 8b500e9..0d6925c 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -12,12 +12,12 @@ jobs:
     runs-on: ubuntu-22.04
     steps:
     - uses: actions/checkout@v4
-    - uses: actions/setup-go@v4
+    - uses: actions/setup-go@v5
       with:
         go-version-file: go.mod
     - name: Cache Tools
       id: cache-tools
-      uses: actions/cache@v3
+      uses: actions/cache@v4
       with:
         path: |
           bin
@@ -32,7 +32,7 @@ jobs:
     runs-on: ubuntu-22.04
     steps:
     - uses: actions/checkout@v4
-    - uses: actions/setup-go@v4
+    - uses: actions/setup-go@v5
       with:
         go-version-file: go.mod
     - name: Set up Docker Buildx
@@ -47,7 +47,7 @@ jobs:
     runs-on: ubuntu-22.04
     steps:
     - uses: actions/checkout@v4
-    - uses: actions/setup-go@v4
+    - uses: actions/setup-go@v5
       with:
         go-version-file: go.mod
     - run: make test MYSQL_VERSION=${{ matrix.mysql-version }}
diff --git a/.github/workflows/release.yaml b/.github/workflows/release.yaml
index 8389c73..b5371f8 100644
--- a/.github/workflows/release.yaml
+++ b/.github/workflows/release.yaml
@@ -10,7 +10,7 @@ jobs:
     runs-on: ubuntu-22.04
     steps:
       - uses: actions/checkout@v4
-      - uses: actions/setup-go@v4
+      - uses: actions/setup-go@v5
         with:
           go-version-file: go.mod
       - run: CGO_ENABLED=0 GOOS=linux GOARCH=amd64 make build/moco-agent
diff --git a/Makefile b/Makefile
index c0578ba..b358778 100644
--- a/Makefile
+++ b/Makefile
@@ -1,4 +1,4 @@
-MYSQL_VERSION = 8.0.28
+MYSQL_VERSION = 8.0.37
 
 # For Go
 GOOS := $(shell go env GOOS)
@@ -18,7 +18,7 @@ PROTOC_BIN := $(PWD)/bin/protoc
 PROTOC_GEN_GO := $(PWD)/bin/protoc-gen-go
 PROTOC_GEN_GO_GRPC := $(PWD)/bin/protoc-gen-go-grpc
 PROTOC_GEN_DOC := $(PWD)/bin/protoc-gen-doc
-PROTOC_VERSION := 25.1
+PROTOC_VERSION := 26.1
 PROTOC_GEN_GO_VERSION := $(shell awk '/google.golang.org\/protobuf/ {print substr($$2, 2)}' go.mod)
 PROTOC_GEN_GO_GRPC_VERSON=1.3.0
 PROTOC_GEN_DOC_VERSION=1.5.1
diff --git a/go.mod b/go.mod
index be26695..7c210bc 100644
--- a/go.mod
+++ b/go.mod
@@ -1,6 +1,6 @@
 module github.com/cybozu-go/moco-agent
 
-go 1.21
+go 1.22.3
 
 require (
 	github.com/cybozu-go/well v1.11.2
diff --git a/proto/agentrpc.pb.go b/proto/agentrpc.pb.go
index 4c485aa..caf7648 100644
--- a/proto/agentrpc.pb.go
+++ b/proto/agentrpc.pb.go
@@ -1,7 +1,7 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
 // 	protoc-gen-go v1.31.0
-// 	protoc        v4.25.1
+// 	protoc        v5.26.1
 // source: proto/agentrpc.proto
 
 package proto
diff --git a/proto/agentrpc_grpc.pb.go b/proto/agentrpc_grpc.pb.go
index 8d56068..f16737e 100644
--- a/proto/agentrpc_grpc.pb.go
+++ b/proto/agentrpc_grpc.pb.go
@@ -1,7 +1,7 @@
 // Code generated by protoc-gen-go-grpc. DO NOT EDIT.
 // versions:
 // - protoc-gen-go-grpc v1.3.0
-// - protoc             v4.25.1
+// - protoc             v5.26.1
 // source: proto/agentrpc.proto
 
 package proto