diff --git a/cschwabpy/SchwabAsyncClient.py b/cschwabpy/SchwabAsyncClient.py
index e635790..6456a88 100644
--- a/cschwabpy/SchwabAsyncClient.py
+++ b/cschwabpy/SchwabAsyncClient.py
@@ -379,8 +379,13 @@ async def download_option_chain_async(
             response = await client.get(
                 url=target_url, params={}, headers=self.__auth_header()
             )
-            json_res = response.json()
-            return OptionChain(**json_res)
+            if response.status_code == 200:
+                json_res = response.json()
+                return OptionChain(**json_res)
+            else:
+                raise Exception(
+                    "Failed to download option chain. Status: ", response.status_code
+                )
         finally:
             if not self.__keep_client_alive:
                 await client.aclose()
diff --git a/cschwabpy/SchwabClient.py b/cschwabpy/SchwabClient.py
index 902b778..214d4bf 100644
--- a/cschwabpy/SchwabClient.py
+++ b/cschwabpy/SchwabClient.py
@@ -381,8 +381,13 @@ def download_option_chain(
             response = client.get(
                 url=target_url, params={}, headers=self.__auth_header()
             )
-            json_res = response.json()
-            return OptionChain(**json_res)
+            if response.status_code == 200:
+                json_res = response.json()
+                return OptionChain(**json_res)
+            else:
+                raise Exception(
+                    "Failed to download option chain. Status: ", response.status_code
+                )
         finally:
             if not self.__keep_client_alive:
                 client.close()
diff --git a/pyproject.toml b/pyproject.toml
index 5b7661f..ccd74da 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "cschwabpy"
-version = "0.1.3.2"
+version = "0.1.3.3"
 description = ""
 authors = ["Tony Wang <ivytony@gmail.com>"]
 readme = "README.md"
diff --git a/setup.py b/setup.py
index 886672f..0c151ee 100644
--- a/setup.py
+++ b/setup.py
@@ -5,7 +5,7 @@
 
 setup(
     name="CSchwabPy",
-    version="0.1.3.2",
+    version="0.1.3.3",
     description="Charles Schwab Stock & Option Trade API Client for Python.",
     long_description=long_description,
     long_description_content_type="text/markdown",