diff --git a/platformio/package/manifest/schema.py b/platformio/package/manifest/schema.py
index be49b3ee..d1390a88 100644
--- a/platformio/package/manifest/schema.py
+++ b/platformio/package/manifest/schema.py
@@ -240,9 +240,5 @@ class ManifestSchema(BaseSchema):
     @staticmethod
     @memoized(expire="1h")
     def load_spdx_licenses():
-        r = requests.get(
-            "https://raw.githubusercontent.com/spdx/license-list-data"
-            "/v3.8/json/licenses.json"
-        )
-        r.raise_for_status()
-        return r.json()
+        import json
+        return json.load(open("@SPDX_LICENSE_LIST_DATA@/json/licenses.json"))