diff --git a/.travis.yml b/.travis.yml
index 3d79c9aa387c..642d4c1275a5 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -7,14 +7,14 @@ cache:
     - $GOPATH/src/github.com/pingcap/pd/.retools
 
 go:
-  - 1.11.4
+  - 1.12
 
 script:
   - make ci
 
 matrix:
   include:
-  - go: 1.11.4
+  - go: 1.12
     install:
       - go get github.com/mattn/goveralls
     env:
diff --git a/Dockerfile b/Dockerfile
index 2209728b5a70..42973d3bc43d 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM golang:1.11.1-alpine as builder
+FROM golang:1.12-alpine as builder
 MAINTAINER siddontang
 
 RUN apk add --no-cache \
diff --git a/README.md b/README.md
index aa1b4edcec9d..73a0c68f0ce1 100644
--- a/README.md
+++ b/README.md
@@ -12,7 +12,7 @@ PD supports distribution and fault-tolerance by embedding [etcd](https://github.
 
 ## Build
 
-1. Make sure [​*Go*​](https://golang.org/) (version 1.11+) is installed. For development, go 1.11.2+ is required.
+1. Make sure [​*Go*​](https://golang.org/) (version 1.12) is installed.
 2. Use `make` to install PD. PD is installed in the `bin` directory.
 
 ## Usage
diff --git a/circle.yml b/circle.yml
index f7a88049736e..ea1bd6c7d295 100644
--- a/circle.yml
+++ b/circle.yml
@@ -3,7 +3,7 @@ version: 2
 jobs:
   build:
     docker:
-      - image: golang:1.11.4
+      - image: golang:1.12
     working_directory: /go/src/github.com/pingcap/pd
     steps:
       - checkout
diff --git a/go.mod b/go.mod
index 71fea360e30d..4d7d801e2993 100644
--- a/go.mod
+++ b/go.mod
@@ -1,5 +1,7 @@
 module github.com/pingcap/pd
 
+go 1.12
+
 require (
 	github.com/BurntSushi/toml v0.3.1
 	github.com/chzyer/logex v1.1.10 // indirect