diff --git a/src/pip/_internal/metadata/_json.py b/src/pip/_internal/metadata/_json.py
index 9097dd58590..f3aeab3225f 100644
--- a/src/pip/_internal/metadata/_json.py
+++ b/src/pip/_internal/metadata/_json.py
@@ -23,6 +23,8 @@
     ("Maintainer", False),
     ("Maintainer-email", False),
     ("License", False),
+    ("License-Expression", False),
+    ("License-File", True),
     ("Classifier", True),
     ("Requires-Dist", True),
     ("Requires-Python", False),