diff --git a/.travis.yml b/.travis.yml
index 9071aad..0c16a5c 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -4,6 +4,9 @@ go:
   - 1.9
   - tip
 
+env:
+  - GO111MODULE=on
+
 install:
   - |
     # fix path issue in forks
diff --git a/go.mod b/go.mod
new file mode 100644
index 0000000..f427c1d
--- /dev/null
+++ b/go.mod
@@ -0,0 +1,3 @@
+module github.com/piprate/json-gold
+
+require github.com/pquerna/cachecontrol v0.0.0-20180517163645-1555304b9b35
diff --git a/go.sum b/go.sum
new file mode 100644
index 0000000..31963b6
--- /dev/null
+++ b/go.sum
@@ -0,0 +1,2 @@
+github.com/pquerna/cachecontrol v0.0.0-20180517163645-1555304b9b35 h1:J9b7z+QKAmPf4YLrFg6oQUotqHQeUNWwkvo7jZp1GLU=
+github.com/pquerna/cachecontrol v0.0.0-20180517163645-1555304b9b35/go.mod h1:prYjPmNq4d1NPVmpShWobRqXY3q7Vp+80DqgxxUrUIA=