diff --git a/.circleci/config.yml b/.circleci/config.yml
index 80ca586..c260539 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -26,6 +26,7 @@ jobs:
           working_directory: server
           command: |
             ./setup.sh
+            ./generate.sh
             ./test.sh -v
       - run:
           name: build
diff --git a/server/generate.sh b/server/generate.sh
new file mode 100755
index 0000000..9c68937
--- /dev/null
+++ b/server/generate.sh
@@ -0,0 +1,14 @@
+#!/bin/bash -eu
+
+cd `dirname $0`
+
+PACKAGE_NAME=github.com/mercari/mtc2018-web/server
+
+targets=`find . -type f \( -name '*.go' -and -not -iwholename '*vendor*'  -and -not -iwholename '*node_modules*' \)`
+packages=`go list ${PACKAGE_NAME}/...`
+
+set -x
+
+# Apply tools
+export PATH=$(pwd)/bin:$PATH
+GO111MODULE=off go generate $packages
diff --git a/server/test.sh b/server/test.sh
index e633d20..6e9c8cf 100755
--- a/server/test.sh
+++ b/server/test.sh
@@ -9,9 +9,11 @@ packages=`go list ${PACKAGE_NAME}/...`
 
 # Apply tools
 export PATH=$(pwd)/bin:$PATH
-GO111MODULE=off go generate $packages
 goimports -w $targets
 go tool vet $targets
 golint -min_confidence 0.6 -set_exit_status $packages
 
 go test -race ./... $@
+
+# diff check
+git diff --quiet