Use PyPy 5.0.0
diff --git a/.travis.yml b/.travis.yml
index 7afcce2..3f0c813 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -110,8 +110,8 @@
           PYENV_ROOT="$HOME/.pyenv"
           PATH="$PYENV_ROOT/bin:$PATH"
           eval "$(pyenv init -)"
-          pyenv install pypy-4.0.1
-          pyenv global pypy-4.0.1
+          pyenv install pypy-5.0.0
+          pyenv global pypy-5.0.0
       fi
       pip install virtualenv
     fi