diff --git a/restful.cabal b/restful.cabal
index d48ec210..26910f74 100644
--- a/restful.cabal
+++ b/restful.cabal
@@ -12,6 +12,22 @@ build-type:      Simple
 homepage:        http://github.com/snoyberg/restful/tree/master
 
 library
-    build-depends:   base
+    build-depends:   base >= 4 && < 5,
+                     old-locale >= 1.0.0.1,
+                     time >= 1.1.3,
+                     hack-middleware-clientsession,
+                     hack-middleware-jsonp >= 0.0.1,
+                     hack-middleware-cleanpath >= 0.0.1,
+                     hack-middleware-gzip,
+                     hack-handler-cgi >= 0.0.2,
+                     hack >= 2009.5.19,
+                     split >= 0.1.1,
+                     authenticate >= 0.0.1,
+                     data-default >= 0.2,
+                     predicates >= 0.1,
+                     bytestring >= 0.9.1.4,
+                     bytestring-class,
+                     web-encodings,
+                     mtl >= 1.1.0.2
     exposed-modules: Web.Restful
     ghc-options:     -Wall