diff --git a/src/fosslight_dependency/package_manager/Nuget.py b/src/fosslight_dependency/package_manager/Nuget.py
index 28f62d3b..8fe515f7 100644
--- a/src/fosslight_dependency/package_manager/Nuget.py
+++ b/src/fosslight_dependency/package_manager/Nuget.py
@@ -54,7 +54,8 @@ def parse_oss_information(self, f_name):
                 oss_item.version = oss_version
 
                 license_name = ''
-                response = requests.get(f'{self.nuget_api_url}{oss_origin_name}/{oss_item.version}/{oss_origin_name}.nuspec')
+                response = requests.get(f'{self.nuget_api_url.lower()}{oss_origin_name.lower()}/ \
+                                        {oss_item.version.lower()}/{oss_origin_name.lower()}.nuspec')
                 if response.status_code == 200:
                     root = fromstring(response.text)
                     xmlns = ''