diff --git a/src/libfetchers/github.cc b/src/libfetchers/github.cc
index 498e41357..3bdc99425 100644
--- a/src/libfetchers/github.cc
+++ b/src/libfetchers/github.cc
@@ -109,6 +109,7 @@ struct GitArchiveInputScheme : InputScheme
             "narHash",
             "lastModified",
             "host",
+            "treeHash",
         };
     }