Index: snap-0.13.2.9/snap.cabal
===================================================================
--- snap-0.13.2.9.orig/snap.cabal	2014-12-22 00:29:52.466018732 +0100
+++ snap-0.13.2.9/snap.cabal	2014-12-22 00:30:15.658479972 +0100
@@ -186,7 +186,7 @@
   else
     build-depends:
       base                      >= 4.4      && < 5,
-      lens                      >= 3.7.6    && < 4.5
+      lens                      >= 3.7.6    && < 4.7
 
   extensions:
     BangPatterns,
