diff --git a/pkgs/tools/misc/unicode/default.nix b/pkgs/tools/misc/unicode/default.nix
index ea4eec221ddc..9ace1f137b82 100644
--- a/pkgs/tools/misc/unicode/default.nix
+++ b/pkgs/tools/misc/unicode/default.nix
@@ -12,8 +12,8 @@ python3Packages.buildPythonApplication rec {
   };
 
   ucdtxt = fetchurl {
-    url = http://www.unicode.org/Public/10.0.0/ucd/UnicodeData.txt;
-    sha256 = "1cfak1j753zcrbgixwgppyxhm4w8vda8vxhqymi7n5ljfi6kwhjj";
+    url = http://www.unicode.org/Public/11.0.0/ucd/UnicodeData.txt;
+    sha256 = "16b0jzvvzarnlxdvs2izd5ia0ipbd87md143dc6lv6xpdqcs75s9";
   };
 
   postFixup = ''