diff --git a/circle.yml b/circle.yml
index dc61116..b8bd375 100644
--- a/circle.yml
+++ b/circle.yml
@@ -3,14 +3,13 @@ machine:
     version:
       # major versions, test first
       - "2.7"
-      - "3.5-dev"
+      - "3.5.0"
       # other versions
-      - "2.6"
-      - "3.3"
-      - "3.4"
-      - "3.5"
+      - "2.6.8"
+      - "3.3.3"
+      - "3.4.3"
       - "nightly"
-      - "pypy"
+      - "pypy-2.5.0"
       # not included, for incompatibility
       # - "2.5" # tarvis errs
       # - "3.2" # humanfriendly cant install