Merge pull request #2356 from alex/doc-pypy

Fixes #2353 -- document that we need PyPy 2.6+
diff --git a/README.rst b/README.rst
index 949826e..19fa779 100644
--- a/README.rst
+++ b/README.rst
@@ -18,7 +18,7 @@
 
 ``cryptography`` is a package which provides cryptographic recipes and
 primitives to Python developers.  Our goal is for it to be your "cryptographic
-standard library". It supports Python 2.6-2.7, Python 3.3+, and PyPy.
+standard library". It supports Python 2.6-2.7, Python 3.3+, and PyPy 2.6+.
 
 ``cryptography`` includes both high level recipes, and low level interfaces to
 common cryptographic algorithms such as symmetric ciphers, message digests and
diff --git a/docs/installation.rst b/docs/installation.rst
index 277e021..1caeb1f 100644
--- a/docs/installation.rst
+++ b/docs/installation.rst
@@ -10,7 +10,7 @@
 Supported platforms
 -------------------
 
-Currently we test ``cryptography`` on Python 2.6, 2.7, 3.3, 3.4 and PyPy
+Currently we test ``cryptography`` on Python 2.6, 2.7, 3.3, 3.4 and PyPy 2.6+
 on these operating systems.
 
 * x86-64 CentOS 7.x, 6.4 and CentOS 5.x