diff --git a/.travis.yml b/.travis.yml
index e2a47e6f1..99316f436 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,4 +1,5 @@
 language: cpp
+group: deprecated-2017Q3 # workaround for failing: pip install pep8
 matrix:
   include:
     - compiler: clang