diff --git a/example/example.cabal b/example/example.cabal
index 28b4e11..2e996cd 100644
--- a/example/example.cabal
+++ b/example/example.cabal
@@ -21,7 +21,7 @@ Executable example
     base >= 4 && < 5,
     bytestring >= 0.9.1 && < 0.10,
     heist >= 0.10 && < 0.11,
-    lens >= 3.3 && < 3.4,
+    lens >= 3.3 && < 3.7,
     MonadCatchIO-transformers >= 0.2.1 && < 0.4,
     mtl >= 2 && < 3,
     snap >= 0.10 && < 0.11,