diff --git a/hasql.cabal b/hasql.cabal
--- a/hasql.cabal
+++ b/hasql.cabal
@@ -1,7 +1,7 @@
 name:
   hasql
 version:
-  0.7.3.1
+  0.7.3.2
 synopsis:
   A minimalistic general high level API for relational databases
 description:
@@ -106,7 +106,7 @@
     vector < 0.11,
     text >= 1.0 && < 1.3,
     -- 
-    either >= 4.3 && < 4.4,
+    either >= 4.3 && < 5,
     list-t >= 0.3.1 && < 0.5,
     mmorph == 1.0.*,
     mtl >= 2.1 && < 2.3,