diff --git a/pkgs/tools/text/ascii/default.nix b/pkgs/tools/text/ascii/default.nix
index b48d9d0cb4ae..613288079d34 100644
--- a/pkgs/tools/text/ascii/default.nix
+++ b/pkgs/tools/text/ascii/default.nix
@@ -2,11 +2,11 @@
 
 stdenv.mkDerivation rec {
   pname = "ascii";
-  version = "3.19";
+  version = "3.20";
 
   src = fetchurl {
     url = "http://www.catb.org/~esr/ascii/${pname}-${version}.tar.gz";
-    sha256 = "sha256-+dou/tgvJFZY+VYeW3VoCecerw5adzWsW+uSTN2ppWA=";
+    sha256 = "sha256-nm5X6mDUGagDoCTOY2YlTvtxYma4Tu3VjNmA2rzBFnQ=";
   };
 
   prePatch = ''