diff --git a/pkgs/development/libraries/libidn/default.nix b/pkgs/development/libraries/libidn/default.nix
index b6f08a9206e..66ae352525f 100644
--- a/pkgs/development/libraries/libidn/default.nix
+++ b/pkgs/development/libraries/libidn/default.nix
@@ -1,11 +1,11 @@
 { fetchurl, stdenv, libiconv }:
 
 stdenv.mkDerivation rec {
-  name = "libidn-1.34";
+  name = "libidn-1.35";
 
   src = fetchurl {
     url = "mirror://gnu/libidn/${name}.tar.gz";
-    sha256 = "0g3fzypp0xjcgr90c5cyj57apx1cmy0c6y9lvw2qdcigbyby469p";
+    sha256 = "07pyy0afqikfq51z5kbzbj9ldbd12mri0zvx0mfv3ds6bc0g26pi";
   };
 
   outputs = [ "bin" "dev" "out" "info" "devdoc" ];