diff --git a/CHANGELOG.md b/CHANGELOG.md
index dd70238..0933270 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,6 +6,12 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 
 Check our main [developer changelog](https://developer.paddle.com/?utm_source=dx&utm_medium=paddle-python-sdk) for information about changes to the Paddle Billing platform, the Paddle API, and other developer tools.
 
+## 0.3.2 - 2024-11-07
+
+### Fixed
+
+- `paddle_billing.Entities.Shared.TransactionLineItemPreview` `proration` can now be None
+
 ## 0.3.1 - 2024-10-14
 
 ### Fixed
diff --git a/paddle_billing/Client.py b/paddle_billing/Client.py
index 72d23d8..8709624 100644
--- a/paddle_billing/Client.py
+++ b/paddle_billing/Client.py
@@ -206,7 +206,7 @@ def build_request_session(self) -> Session:
                 "Authorization": f"Bearer {self.__api_key}",
                 "Content-Type": "application/json",
                 "Paddle-Version": str(self.use_api_version),
-                "User-Agent": "PaddleSDK/python 0.2.2",
+                "User-Agent": "PaddleSDK/python 0.3.2",
             }
         )
 
diff --git a/paddle_billing/Entities/Shared/TransactionLineItemPreview.py b/paddle_billing/Entities/Shared/TransactionLineItemPreview.py
index ff0b181..665c6dc 100644
--- a/paddle_billing/Entities/Shared/TransactionLineItemPreview.py
+++ b/paddle_billing/Entities/Shared/TransactionLineItemPreview.py
@@ -15,7 +15,7 @@ class TransactionLineItemPreview:
     unit_totals: UnitTotals
     totals: Totals
     product: Product
-    proration: Proration
+    proration: Proration | None
 
     @staticmethod
     def from_dict(data: dict) -> TransactionLineItemPreview:
@@ -26,5 +26,5 @@ def from_dict(data: dict) -> TransactionLineItemPreview:
             unit_totals=UnitTotals.from_dict(data["unit_totals"]),
             totals=Totals.from_dict(data["totals"]),
             product=Product.from_dict(data["product"]),
-            proration=Proration.from_dict(data["proration"]),
+            proration=Proration.from_dict(data["proration"]) if data.get("proration") else None,
         )
diff --git a/setup.py b/setup.py
index 45c5236..5c3b94a 100644
--- a/setup.py
+++ b/setup.py
@@ -2,7 +2,7 @@
 
 
 setup(
-    version="0.3.1",
+    version="0.3.2",
     author="Paddle and contributors",
     author_email="team-dx@paddle.com",
     description="Paddle's Python SDK for Paddle Billing",