diff --git a/.travis.yml b/.travis.yml
index bb0cf46..b8d5e06 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -3,7 +3,7 @@ language: python
 python: 3.7
 
 install:
-  - pip install flake8 kodi-addon-checker git+https://github.com/romanvm/kodi-addon-submitter.git
+  - pip install flake8 flake8_polyfill kodi-addon-checker git+https://github.com/romanvm/kodi-addon-submitter.git
 
 before_script:
 - git config core.quotepath false