diff --git a/.travis.yml b/.travis.yml
index 03b43b6..ca3da38 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -15,10 +15,12 @@ jobs:
 
     - env: TOXENV=flake8
       python: "3.5"
+      before_install: skip
       after_success: skip
 
     - env: TOXENV=mypy
       python: "3.5"
+      before_install: skip
       after_success: skip
 
     - stage: deploy to PyPI