diff --git a/bindings/python/CHANGELOG.md b/bindings/python/CHANGELOG.md
index eeb65a54..ceb95434 100644
--- a/bindings/python/CHANGELOG.md
+++ b/bindings/python/CHANGELOG.md
@@ -3,7 +3,7 @@
 
 ---
 
-# Changes in Version 1.9.0 (2025/XX/XX)
+# Changes in Version 1.9.0 (2025/05/27)
 
 - Providing a schema now enforces strict type adherence for data.
   If a result contains a field whose value does not match the schema's type for that field, a TypeError will be raised.
diff --git a/bindings/python/pymongoarrow/version.py b/bindings/python/pymongoarrow/version.py
index a76b264e..27ae3732 100644
--- a/bindings/python/pymongoarrow/version.py
+++ b/bindings/python/pymongoarrow/version.py
@@ -12,6 +12,6 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-__version__ = "1.9.0.dev0"
+__version__ = "1.9.0"
 
 _MIN_LIBBSON_VERSION = "1.23.1"