diff --git a/scripts/test-coverage b/scripts/test-coverage
index 22240dbd..233c0f79 100755
--- a/scripts/test-coverage
+++ b/scripts/test-coverage
@@ -15,5 +15,5 @@ mocha_bin="${npm_bin}/_mocha"
 BABEL_ENV=test \
   node "$babel_istanbul_bin" cover "$mocha_bin" \
   --report lcov -- \
-  -R spec --reporter dot \
+  --timeout 6000  -R spec --reporter dot \
   ./test/helpers.js ./test/*-test.js