diff --git a/.travis.yml b/.travis.yml
index e687e22..c286382 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -5,7 +5,7 @@ go:
 
 install: true
 script:
-  - env GO111MODULE=on go test -race -v
+  - env GO111MODULE=on go test -race -v -coverprofile=coverage.txt -covermode=atomic
   - cd cmd/gost && env GO111MODULE=on go build
 
 after_success: