diff --git a/.travis.yml b/.travis.yml
index e8f3196a..bbaa052a 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -26,10 +26,10 @@ addons:
 before_install:
   # Determine whether we're using PyPy, as it determines which requirements
   # file we will use.
-  - if (python --version 2>&1 | grep PyPy > /dev/null); then export REQUIREMENTS=requirements-test-pypy.txt; else export REQUIREMENTS=requirements-test-cpython.txt; fi
+  - if [[ "$TRAVIS_PYTHON_VERSION" == "pypy" ]]; then export REQUIREMENTS=requirements-test-pypy.txt; else export REQUIREMENTS=requirements-test-cpython.txt; fi
+  - pip install --upgrade pip
 
 install:
-  - pip install --upgrade pip
   - pip install -r $REQUIREMENTS
   - pip install coveralls