diff --git a/.travis.yml b/.travis.yml
index 1bab8852f..7d5e1b509 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -86,9 +86,9 @@ install:
     # Travis CI macOS image ships with CMake 3.11.3, need 3.12 or later.
     # Avoid `brew`, takes too long.
     - if [ "$TRAVIS_OS_NAME" = "osx" ]; then
-          virtualenv venv
-          source venv/bin/activate
-          pip install cmake
+          virtualenv venv;
+          source venv/bin/activate;
+          pip install cmake;
       fi
 
 script: