diff --git a/authenticate.cabal b/authenticate.cabal
index 8dfa684c..c4110511 100644
--- a/authenticate.cabal
+++ b/authenticate.cabal
@@ -35,7 +35,8 @@ library
                      blaze-builder >= 0.2 && < 0.4,
                      attoparsec >= 0.9   && < 0.10,
                      tls >= 0.7 && < 0.8,
-                     containers
+                     containers,
+                     process >= 1.0.1.1 && < 1.1
     exposed-modules: Web.Authenticate.Rpxnow,
                      Web.Authenticate.OpenId,
                      Web.Authenticate.BrowserId,