diff --git a/pkgs/development/libraries/haskell/wai-app-static/default.nix b/pkgs/development/libraries/haskell/wai-app-static/default.nix
index 5ccf7531d4c3..2ff182470009 100644
--- a/pkgs/development/libraries/haskell/wai-app-static/default.nix
+++ b/pkgs/development/libraries/haskell/wai-app-static/default.nix
@@ -6,8 +6,8 @@
 
 cabal.mkDerivation (self: {
   pname = "wai-app-static";
-  version = "1.3.0.5";
-  sha256 = "1fz2a30f3imn0m5q6hjkm2xan0ddalhfbzx78pklz4g7k79s1ncn";
+  version = "1.3.1";
+  sha256 = "0r2ghx3nqh7nms8yxa874h5pyagj993r077f8riybjyjp078s2lk";
   buildDepends = [
     base64Bytestring blazeBuilder blazeHtml blazeMarkup cereal
     cryptoConduit cryptohash fileEmbed httpDate httpTypes mimeTypes