Prepare for 20.0.1 release (#979)

diff --git a/CHANGELOG.rst b/CHANGELOG.rst
index f90ea3c..63e74cb 100644
--- a/CHANGELOG.rst
+++ b/CHANGELOG.rst
@@ -4,7 +4,7 @@
 Versions are year-based with a strict backward-compatibility policy.
 The third digit is only for regressions.
 
-21.0.0 (UNRELEASED)
+20.0.1 (2020-12-15)
 -------------------
 
 Backward-incompatible changes:
@@ -16,6 +16,8 @@
 Changes:
 ^^^^^^^^
 
+- Fixed compatibility with OpenSSL 1.1.0.
+
 20.0.0 (2020-11-27)
 -------------------
 
diff --git a/src/OpenSSL/version.py b/src/OpenSSL/version.py
index 2274aac..9348867 100644
--- a/src/OpenSSL/version.py
+++ b/src/OpenSSL/version.py
@@ -17,7 +17,7 @@
     "__version__",
 ]
 
-__version__ = "21.0.0.dev"
+__version__ = "20.0.1"
 
 __title__ = "pyOpenSSL"
 __uri__ = "https://pyopenssl.org/"