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-rw-r--r--docs/hazmat/primitives/interfaces.rst2
1 files changed, 2 insertions, 0 deletions
diff --git a/docs/hazmat/primitives/interfaces.rst b/docs/hazmat/primitives/interfaces.rst
index 12644f4c..2adad913 100644
--- a/docs/hazmat/primitives/interfaces.rst
+++ b/docs/hazmat/primitives/interfaces.rst
@@ -209,6 +209,8 @@ Key Derivation Functions
.. class:: KeyDerivationFunction
+ .. versionadded:: 0.2
+
.. method:: derive(key_material)
:param key_material bytes: The input key material. Depending on what