diff --git a/CHANGELOG.md b/CHANGELOG.md
index 14d4ef69..a11b8aa7 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,12 @@
 # Optimizely Python SDK Changelog
 
+## 3.3.1
+December 16th, 2019
+
+### Bug Fixes:
+* Fixed [installation issue](https://github.com/optimizely/python-sdk/issues/220) on Windows. ([#224](https://github.com/optimizely/python-sdk/pull/224))
+* Fixed batch event processor deadline reset issue. ([#227](https://github.com/optimizely/python-sdk/pull/227))
+
 ## 3.3.0
 October 28th, 2019
 
diff --git a/optimizely/version.py b/optimizely/version.py
index aa4b44f5..9acac36b 100644
--- a/optimizely/version.py
+++ b/optimizely/version.py
@@ -11,5 +11,5 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-version_info = (3, 3, 0)
+version_info = (3, 3, 1)
 __version__ = '.'.join(str(v) for v in version_info)