diff --git a/pkgs/development/libraries/haskell/classy-prelude/default.nix b/pkgs/development/libraries/haskell/classy-prelude/default.nix
index 018a54f42d7..b3f94ea7bdf 100644
--- a/pkgs/development/libraries/haskell/classy-prelude/default.nix
+++ b/pkgs/development/libraries/haskell/classy-prelude/default.nix
@@ -8,8 +8,8 @@
 
 cabal.mkDerivation (self: {
   pname = "classy-prelude";
-  version = "0.9.4";
-  sha256 = "1pxg515dg174minvajaxl3sqpqjm862pgfpf7n2ynw5cqmaxngxa";
+  version = "0.9.5";
+  sha256 = "1gd5z4gd62v3k59psmrj41ca6mly4fjqgf4l80smv89kc2s2w809";
   buildDepends = [
     basicPrelude chunkedData enclosedExceptions exceptions hashable
     liftedBase monoTraversable mtl primitive semigroups stm