diff --git a/.travis.yml b/.travis.yml
index 5600ec0..78c56a6 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -25,7 +25,7 @@ matrix:
     # pypy3 testing
     #
     # core
-    - python: "pypy3"
+    - python: "pypy3.5"
       env: TOX_POSARGS="-e pypy3-core"
 cache:
   - pip: true