diff --git a/.travis.yml b/.travis.yml
index 5f8fc50..567c8c4 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -16,6 +16,9 @@ notifications:
 node_js:
 - node
 
+install:
+  - npm ci
+
 script: 
 - npm run build
 - npm test
\ No newline at end of file
diff --git a/appveyor.yml b/appveyor.yml
index 8d33df1..4f0116c 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -12,7 +12,7 @@ cache:
   - '%AppData%\..\Local\Cypress\Cache -> package-lock.json'
 
 install:
-  - npm install
+  - npm ci
 
 before_build:
   # Output useful info for debugging.