diff --git a/.travis.yml b/.travis.yml
index 950792d1..50e81eb5 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -10,6 +10,7 @@ before_install:
 
 env:
   global:
+    - GO111MODULE=on
     - PGX_TEST_DATABASE=postgres://pgx_md5:secret@127.0.0.1/pgx_test
     - PGX_TEST_UNIX_SOCKET_CONN_STRING="host=/var/run/postgresql database=pgx_test"
     - PGX_TEST_TCP_CONN_STRING=postgres://pgx_md5:secret@127.0.0.1/pgx_test