--- a/snap-server.cabal
+++ b/snap-server.cabal
@@ -90,7 +90,7 @@
     Control.Concurrent.Extended
 
   build-depends:
-    attoparsec                >= 0.10     && < 0.13,
+    attoparsec                >= 0.10     && < 0.14,
     attoparsec-enumerator     >= 0.3      && < 0.4,
     base                      >= 4.4      && < 5,
     blaze-builder             >= 0.2.1.4  && < 0.5,
