diff --git a/.travis.yml b/.travis.yml
index 82154cf..7361d45 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,15 +1,14 @@
 language: go
 go:
-  - 1.9.x
   - 1.10.x
   - tip
 addons:
   apt:
     chrome: stable
 before_install:
-  - go get github.com/mattn/goveralls
+  - go get github.com/mattn/goveralls golang.org/x/vgo
 script:
   - export CHROMEDP_TEST_RUNNER=google-chrome-stable
   - export CHROMEDP_DISABLE_GPU=true
-  - go test -v -coverprofile=coverage.out
+  - vgo test -v -coverprofile=coverage.out
   - goveralls -service=travis-ci -coverprofile=coverage.out
diff --git a/go.mod b/go.mod
new file mode 100644
index 0000000..b165c8c
--- /dev/null
+++ b/go.mod
@@ -0,0 +1,10 @@
+module github.com/chromedp/chromedp
+
+require (
+	github.com/chromedp/cdproto v0.0.0-20180522032958-55db67b53f25
+	github.com/disintegration/imaging v1.4.2
+	github.com/gorilla/websocket v1.2.0
+	github.com/knq/sysutil v0.0.0-20180306023629-0218e141a794
+	github.com/mailru/easyjson v0.0.0-20180323154445-8b799c424f57
+	golang.org/x/image v0.0.0-20180403161127-f315e4403028
+)