diff --git a/pkgs/applications/misc/lyx/default.nix b/pkgs/applications/misc/lyx/default.nix
index 675f0adfc7f82f..f9d8599e329cd8 100644
--- a/pkgs/applications/misc/lyx/default.nix
+++ b/pkgs/applications/misc/lyx/default.nix
@@ -3,12 +3,12 @@
 }:
 
 mkDerivation rec {
-  version = "2.3.4";
+  version = "2.3.4.3";
   pname = "lyx";
 
   src = fetchurl {
     url = "ftp://ftp.lyx.org/pub/lyx/stable/2.3.x/${pname}-${version}.tar.xz";
-    sha256 = "0qgvc19flnf6ny3ffyj8civwaxrnwcdlw2v708hg49cbmg6f8igh";
+    sha256 = "1rpp6wq0dc0bxwc0pipajv98vi7cpg391nq10d3c4pmpq38m08wx";
   };
 
   # LaTeX is used from $PATH, as people often want to have it with extra pkgs