diff --git a/.travis.yml b/.travis.yml
index 7de2df35..d7c7227d 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -45,6 +45,10 @@ script:
   - yarn test-ci || travis_terminate 1
   - yarn coveralls || travis_terminate 1
 
+branches:
+  only:
+    - master
+
 jobs:
   include:
     - stage: deploy
diff --git a/appveyor.yml b/appveyor.yml
index a425ab9f..885a00a1 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -23,6 +23,8 @@ shallow_clone: true
 
 clone_depth: 1
 
+skip_branch_with_pr: true
+
 install:
   - ps: Install-Product node $env:nodejs_version
   - set CI=true