diff --git a/.travis.yml b/.travis.yml
index 8d8cd7b..88d35b4 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -40,9 +40,12 @@ env:
 
 python:
   - "2.7"
-  - "3.3"
-  - "3.4"
   - "3.5"
+  - "pypy"
+
+matrix:
+  allow_failures:
+    - python: pypy
 
 before_install:
   - "mkdir /tmp/elasticsearch"
diff --git a/setup.py b/setup.py
index 9a1a163..be90fa8 100644
--- a/setup.py
+++ b/setup.py
@@ -142,9 +142,9 @@
         'Programming Language :: Python :: 2',
         'Programming Language :: Python :: 2.7',
         'Programming Language :: Python :: 3',
-        'Programming Language :: Python :: 3.3',
-        'Programming Language :: Python :: 3.4',
         'Programming Language :: Python :: 3.5',
+        'Programming Language :: Python :: Implementation :: CPython',
+        'Programming Language :: Python :: Implementation :: PyPy',
         'Development Status :: 1 - Planning',
     ],
 )