diff --git a/pkgs/os-specific/linux/mdadm/default.nix b/pkgs/os-specific/linux/mdadm/default.nix
index e7aa16d3dd39..7f2195529c6c 100644
--- a/pkgs/os-specific/linux/mdadm/default.nix
+++ b/pkgs/os-specific/linux/mdadm/default.nix
@@ -2,11 +2,11 @@
 
 stdenv.mkDerivation rec {
   pname = "mdadm";
-  version = "4.2";
+  version = "4.3";
 
   src = fetchurl {
     url = "mirror://kernel/linux/utils/raid/mdadm/mdadm-${version}.tar.xz";
-    sha256 = "sha256-RhwhVnCGS7dKTRo2IGhKorL4KW3/oGdD8m3aVVes8B0=";
+    sha256 = "sha256-QWcnrh8QgOpuMJDOo23QdoJvw2kVHjarc2VXupIZb58=";
   };
 
   patches = [ ./no-self-references.patch ];