diff --git a/pkgs/development/libraries/haskell/idna/default.nix b/pkgs/development/libraries/haskell/idna/default.nix
index 1d5bc92bf6f1..125083de890d 100644
--- a/pkgs/development/libraries/haskell/idna/default.nix
+++ b/pkgs/development/libraries/haskell/idna/default.nix
@@ -2,8 +2,8 @@
 
 cabal.mkDerivation (self: {
   pname = "idna";
-  version = "0.2";
-  sha256 = "0gl1mn2fjyxdpzl024imspf7hk4xvj9r8mvisqnlkdsng8i5jnyz";
+  version = "0.3.0";
+  sha256 = "04w2mp9wa4mzdz4njx47j081jia8y000b46cw8vmx44fx8gv1zwp";
   buildDepends = [ punycode stringprep text ];
   meta = {
     description = "Implements IDNA (RFC 3490)";