diff --git a/pkgs/applications/misc/lyx/default.nix b/pkgs/applications/misc/lyx/default.nix
index bf3c3b06dc83..0a6d4549498f 100644
--- a/pkgs/applications/misc/lyx/default.nix
+++ b/pkgs/applications/misc/lyx/default.nix
@@ -13,12 +13,12 @@
 }:
 
 mkDerivation rec {
-  version = "2.4.1";
+  version = "2.4.2.1";
   pname = "lyx";
 
   src = fetchurl {
     url = "ftp://ftp.lyx.org/pub/lyx/stable/2.4.x/${pname}-${version}.tar.xz";
-    hash = "sha256-dN4ooH7zeqlHG8mWLbGCFSolMQx9H0f2drubxj2XE8U=";
+    hash = "sha256-HSscer45Hi+0kQneLI4Tp9/mBfJ99o9om/lH36/HpNk=";
   };
 
   # LaTeX is used from $PATH, as people often want to have it with extra pkgs