diff --git a/pkgs/development/libraries/haskell/socket-io/default.nix b/pkgs/development/libraries/haskell/socket-io/default.nix
index 0a7d4b1c230..c64c7c48edc 100644
--- a/pkgs/development/libraries/haskell/socket-io/default.nix
+++ b/pkgs/development/libraries/haskell/socket-io/default.nix
@@ -6,8 +6,8 @@
 
 cabal.mkDerivation (self: {
   pname = "socket-io";
-  version = "1.1.0";
-  sha256 = "1ffip6jlp3i6pz8gbk8m2ra2q8568mgwgi988yh046w787yf9kpw";
+  version = "1.1.1";
+  sha256 = "0zr5kj519hw90rlicang5f573dd325rxv24psf12fxl6vmyxx1zc";
   buildDepends = [
     aeson attoparsec engineIo mtl stm text transformers
     unorderedContainers vector