Use the latest Python 3.4 release
diff --git a/.travis/install.sh b/.travis/install.sh
index 142b498..c5f9459 100755
--- a/.travis/install.sh
+++ b/.travis/install.sh
@@ -30,8 +30,8 @@
             pyenv global 3.3.6
             ;;
         py34)
-            pyenv install 3.4.2
-            pyenv global 3.4.2
+            pyenv install 3.4.4
+            pyenv global 3.4.4
             ;;
         py35)
             pyenv install 3.5.1