diff --git a/.travis.yml b/.travis.yml
index 2d9b90b..4b1389d 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -13,6 +13,10 @@ env:
   global:
     - GO111MODULE=on
 
+before_install:
+  - (! grep require paho/go.mod)
+  - (! grep replace paho/go.mod)  # don't add require/replace to paho/go.mod
+
 install:
   - go mod download
   - go build ./...
diff --git a/paho/go.mod b/paho/go.mod
index 29b174b..f96ebd9 100644
--- a/paho/go.mod
+++ b/paho/go.mod
@@ -1,10 +1,3 @@
 module github.com/at-wat/mqtt-go/paho
 
 go 1.12
-
-require (
-	github.com/at-wat/mqtt-go v0.4.2
-	github.com/eclipse/paho.mqtt.golang v1.2.0
-)
-
-replace github.com/at-wat/mqtt-go => ../