diff --git a/pkgs/development/libraries/haskell/comonad-transformers/default.nix b/pkgs/development/libraries/haskell/comonad-transformers/default.nix
index 45b218a40f7d..ef0ffe061985 100644
--- a/pkgs/development/libraries/haskell/comonad-transformers/default.nix
+++ b/pkgs/development/libraries/haskell/comonad-transformers/default.nix
@@ -4,8 +4,8 @@
 
 cabal.mkDerivation (self: {
   pname = "comonad-transformers";
-  version = "3.0.4";
-  sha256 = "1jvg08vmi47p8ji1llci02lk675q93pm6dd8imqj6xjrq34g4x9a";
+  version = "3.1";
+  sha256 = "024l437xfi0bkbn3121xi8slwsh9jby9a92qg1m5y0nmxzs9lxda";
   buildDepends = [
     comonad contravariant distributive semigroupoids semigroups
     transformers