diff --git a/bindings/python/CHANGELOG.rst b/bindings/python/CHANGELOG.rst
index a70c34d22..0bedcdc92 100644
--- a/bindings/python/CHANGELOG.rst
+++ b/bindings/python/CHANGELOG.rst
@@ -1,6 +1,12 @@
 Changelog
 =========
 
+Changes in Version 1.20.0
+-------------------------
+
+- Bundle libmongocrypt 1.20.0 in release wheels.
+- Stable support for substring queries, including "string", "suffix", and "prefix" algorithms.
+
 Changes in Version 1.18.1
 -------------------------
 
diff --git a/bindings/python/pymongocrypt/version.py b/bindings/python/pymongocrypt/version.py
index 326bfbfde..67e06c58c 100644
--- a/bindings/python/pymongocrypt/version.py
+++ b/bindings/python/pymongocrypt/version.py
@@ -12,6 +12,6 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-__version__ = "1.18.2.dev0"
+__version__ = "1.20.0"
 
 _MIN_LIBMONGOCRYPT_VERSION = "1.8.0"