diff --git a/CHANGELOG.md b/CHANGELOG.md
index b1239f41..fd0f86ad 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,8 @@
 # Changelog
 
+## Version 3.1.1
+- Fix inclusion of static fields in new Advanced Commerce API types [https://github.com/apple/app-store-server-library-python/pull/194]
+
 ## Version 3.1.0
 - Incorporate changes for Advanced Commerce API, Retention Messaging API 1.5 and App Store Server API v1.21 [https://github.com/apple/app-store-server-library-python/pull/188] [https://github.com/apple/app-store-server-library-python/pull/189] from @riyazpanjwani
 - Incorporate changes for App Store Server API v1.20 [https://github.com/apple/app-store-server-library-python/pull/191] from @riyazpanjwani
diff --git a/appstoreserverlibrary/api_client.py b/appstoreserverlibrary/api_client.py
index a3fa52f1..3441041c 100644
--- a/appstoreserverlibrary/api_client.py
+++ b/appstoreserverlibrary/api_client.py
@@ -727,7 +727,7 @@ def _get_full_url(self, path) -> str:
     
     def _get_headers(self) -> Dict[str, str]:
         return {
-            'User-Agent': "app-store-server-library/python/3.1.0",
+            'User-Agent': "app-store-server-library/python/3.1.1",
             'Authorization': f'Bearer {self._generate_token()}',
             'Accept': 'application/json'
         }
diff --git a/pyproject.toml b/pyproject.toml
index 359ab3b1..c3b54b82 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -6,7 +6,7 @@ build-backend = "setuptools.build_meta"
 
 [project]
 name = "app-store-server-library"
-version = "3.1.0"
+version = "3.1.1"
 description = "The App Store Server Library"
 readme = {file = "README.md", content-type = "text/markdown"}
 license = {text = "MIT"}