add os random engine to changelog
diff --git a/docs/changelog.rst b/docs/changelog.rst
index e322b14..4d459bd 100644
--- a/docs/changelog.rst
+++ b/docs/changelog.rst
@@ -17,6 +17,7 @@
 * Added :class:`~cryptography.hazmat.primitives.kdf.pbkdf2.PBKDF2HMAC`.
 * Added :class:`~cryptography.hazmat.primitives.kdf.hkdf.HKDF`.
 * Added :doc:`/hazmat/backends/multibackend`.
+* Set default random for the :doc:`/hazmat/backends/openssl` to the OS random engine.
 
 0.1 - 2014-01-08
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