diff --git a/pkgs/development/libraries/haskell/wai-logger/default.nix b/pkgs/development/libraries/haskell/wai-logger/default.nix
index 16f02f87746..f6035269112 100644
--- a/pkgs/development/libraries/haskell/wai-logger/default.nix
+++ b/pkgs/development/libraries/haskell/wai-logger/default.nix
@@ -4,8 +4,8 @@
 
 cabal.mkDerivation (self: {
   pname = "wai-logger";
-  version = "0.3.0";
-  sha256 = "132jcjyqr7bxcfi7v9mapvx8dci0lz8rv91mgnrzgvpac542c2yq";
+  version = "0.3.1";
+  sha256 = "0x1d67fcfpjrgyjr7hipifqrzk13x8z8xmlj7h999r8mswijhgii";
   buildDepends = [
     blazeBuilder byteorder caseInsensitive dateCache fastLogger
     httpTypes network wai