diff --git a/setup.py b/setup.py
index dc0ed948..456b33c9 100644
--- a/setup.py
+++ b/setup.py
@@ -51,11 +51,11 @@
         'esridump == 1.13.0',
 
         # Used in openaddr.parcels
-        'Shapely == 2.0.1',
+        'Shapely >= 2.0.1, < 3',
 
         # https://github.com/tilezen/mapbox-vector-tile
         'mapbox-vector-tile == 2.0.1',
         'future==0.18.3',
-        'protobuf==5.29.6',
+        'protobuf>=4.21, <5',
     ]
 )