diff --git a/.travis.yml b/.travis.yml
index 1014d27..21e8c0c 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -7,6 +7,7 @@ cache:
   - $TRAVIS_BUILD_DIR/apt-cache/
 
 before_install:
+  - mkdir -p $TRAVIS_BUILD_DIR/apt-cache/
   - sudo add-apt-repository ppa:beineri/opt-qt-5.11.1-xenial -y
   - sudo apt-get update