diff --git a/hailgun.cabal b/hailgun.cabal
--- a/hailgun.cabal
+++ b/hailgun.cabal
@@ -10,7 +10,7 @@
 -- PVP summary:      +-+------- breaking API changes
 --                   | | +----- non-breaking API additions
 --                   | | | +--- code changes with no API change
-version:             0.4.0.2
+version:             0.4.0.3
 
 -- A short (one-line) description of the package.
 synopsis:            Mailgun REST api interface for Haskell.
@@ -76,7 +76,7 @@
                         , transformers       >= 0.3 && <0.5
                         , http-client        == 0.4.*
                         , http-client-tls    == 0.2.*
-                        , email-validate     == 2.1.*
+                        , email-validate     >= 2.0 && <2.2
                         , http-types         == 0.8.*
                         , exceptions         == 0.8.*
                         , tagsoup            == 0.13.*