diff --git a/pkgs/tools/text/colordiff/default.nix b/pkgs/tools/text/colordiff/default.nix
index df5b35dd9be0..4146429e2839 100644
--- a/pkgs/tools/text/colordiff/default.nix
+++ b/pkgs/tools/text/colordiff/default.nix
@@ -2,13 +2,13 @@
 
 stdenv.mkDerivation rec {
   pname = "colordiff";
-  version = "1.0.20";
+  version = "1.0.21";
 
   src = fetchFromGitHub {
     owner = "daveewart";
     repo = "colordiff";
     rev = "v${version}";
-    sha256 = "sha256-+TtVnUX88LMd8zmhLsKTyR9JlgR7IkUB18PF3LRgPB0=";
+    sha256 = "sha256-TNOw6dqsT0dOIddRoGwEF85CaQF8ICMFUi+GiG5WWpk=";
   };
 
   nativeBuildInputs = [ docbook_xml_dtd_412 docbook_xsl perl w3m-batch xmlto ];