diff --git a/.travis.yml b/.travis.yml
index f61487b6f57288bdea5650a3235a01077325b37a..e03655992cf40ab666f232a80c13359c3fbaed21 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -18,6 +18,9 @@ before_install:
   - curl -o- -L https://yarnpkg.com/install.sh | bash
   - export PATH="$HOME/.yarn/bin:$PATH"
 
+install:
+  - yarn install --frozen-lockfile
+
 cache:
   yarn: true
   directories: