diff --git a/circle.yml b/circle.yml
index b6ad39e..9e24c0d 100644
--- a/circle.yml
+++ b/circle.yml
@@ -9,6 +9,9 @@ dependencies:
     - npm install -g karma-cli
     - npm install
     - ./prepare-tests.sh
+  cache_directories:
+    - test-environments/browser-node/node_modules
+    - test-environments/browser-node-react-16/node_modules
 test:
   override:
     - ./run-tests.sh