diff --git a/docs/changelog.rst b/docs/changelog.rst
index c884382..545d694 100644
--- a/docs/changelog.rst
+++ b/docs/changelog.rst
@@ -11,6 +11,7 @@
 * Removed ``register_cipher_adapter`` method from
   :class:`~cryptography.hazmat.backends.interfaces.CipherBackend`.
 * Added support for the OpenSSL backend under Windows.
+* Improved thread-safety for the OpenSSL backend.
 
 0.1 - 2014-01-08
 ~~~~~~~~~~~~~~~~