diff --git a/hack-middleware-clientsession.cabal b/hack-middleware-clientsession.cabal
--- a/hack-middleware-clientsession.cabal
+++ b/hack-middleware-clientsession.cabal
@@ -1,5 +1,5 @@
 name:            hack-middleware-clientsession
-version:         0.0.0
+version:         0.0.1
 license:         BSD3
 license-file:    LICENSE
 author:          Michael Snoyman <michael@snoyman.com>
@@ -17,7 +17,7 @@
 library
     build-depends:   base >= 4 && < 5,
                      hack,
-                     clientsession,
+                     clientsession >= 0.0.1,
                      old-locale,
                      time >= 1.1.3,
                      predicates,