diff --git a/.travis.yml b/.travis.yml
index a6ab0c5..62200c1 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -8,7 +8,7 @@ jobs:
 before_install:
   - sudo apt-get update -qq
   - sudo apt-get install -qq libarchive-dev
-  - pyenv shell $TRAVIS_PYTHON_VERSION
+  - pyenv shell $(python -c 'import platform; print(platform.python_version())')
 install:
   - make build
 script: