diff --git a/docs/hazmat/backends/interfaces.rst b/docs/hazmat/backends/interfaces.rst
index bd38ed5..af19fbc 100644
--- a/docs/hazmat/backends/interfaces.rst
+++ b/docs/hazmat/backends/interfaces.rst
@@ -248,3 +248,26 @@
 
         :returns:
             :class:`~cryptography.hazmat.primitives.interfaces.AsymmetricVerificationContext`
+
+
+.. class:: OpenSSLSerializationBackend
+
+    .. versionadded:: 0.3
+
+    A backend with methods for working with OpenSSL's "traditional" PKCS #1
+    style key serialization.
+
+    .. method:: load_openssl_pem_private_key(data, password)
+       
+        :param bytes data: PEM data to deserialize.
+
+        :param bytes password: The password to use if this data is encrypted.
+            Should be None if the data is not encrypted.
+
+        :return: A new instance of
+            :class:`~cryptography.hazmat.primitives.serialization.OpenSSLPrivateKey`
+
+        :raises ValueError: If the data could not be deserialized correctly.
+
+        :raises cryptography.exceptions.UnsupportedAlgorithm: If the data is
+            encrypted with an unsupported algorithm.