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--- a/pyforge/setup.py
+++ b/pyforge/setup.py
@@ -21,7 +21,7 @@
         "Babel >= 0.9.4",
         "Lamson",
         "Carrot",
-        "pymongo == 1.5",
+        "pymongo >= 1.5, < 1.6",
         "pysolr",
         "repoze.what-quickstart",
         "sqlalchemy-migrate",