diff --git a/.travis.yml b/.travis.yml
index f29af2d..52f1032 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -13,8 +13,16 @@
 
 matrix:
   include:
+  - python: "2.6"
+    env: CRYPTOGRAPHY_GIT_MASTER=true
   - python: "2.7"
     env: CRYPTOGRAPHY_GIT_MASTER=true
+  - python: "3.2"
+    env: CRYPTOGRAPHY_GIT_MASTER=true
+  - python: "3.3"
+    env: CRYPTOGRAPHY_GIT_MASTER=true
+  - python: "pypy"
+    env: CRYPTOGRAPHY_GIT_MASTER=true
   allow_failures:
   - env: CRYPTOGRAPHY_GIT_MASTER=true