diff --git a/pkgs/by-name/li/libdsk/package.nix b/pkgs/by-name/li/libdsk/package.nix
index a2041ee70b76..4fd1a7391b86 100644
--- a/pkgs/by-name/li/libdsk/package.nix
+++ b/pkgs/by-name/li/libdsk/package.nix
@@ -6,11 +6,11 @@
 
 stdenv.mkDerivation rec {
   pname = "libdsk";
-  version = "1.5.20";
+  version = "1.5.21";
 
   src = fetchurl {
     url = "https://www.seasip.info/Unix/LibDsk/${pname}-${version}.tar.gz";
-    sha256 = "sha256-/ivN4+Oe0N6VmhWTfdDU48NcQLSIVAAtqzzi6DdlAZ0=";
+    sha256 = "sha256-uDRwFS2oF1k/m4biJvkxq+cacB1QlefM0T5bC2h1dd4=";
   };
 
   meta = with lib; {