diff --git a/pkgs/by-name/ar/armadillo/package.nix b/pkgs/by-name/ar/armadillo/package.nix
index 6b83d72a9716..8ec47c8681b7 100644
--- a/pkgs/by-name/ar/armadillo/package.nix
+++ b/pkgs/by-name/ar/armadillo/package.nix
@@ -2,11 +2,11 @@
 
 stdenv.mkDerivation rec {
   pname = "armadillo";
-  version = "14.0.3";
+  version = "14.2.1";
 
   src = fetchurl {
     url = "mirror://sourceforge/arma/armadillo-${version}.tar.xz";
-    hash = "sha256-69YhXusB7kEv7QeMip9/h9Th9hh+vNwbwJ9GCVpPQAM=";
+    hash = "sha256-JJWBXPnRMPcP/7ahJzPQ3K+Gy6rFHotLgq0lGD7aHdU=";
   };
 
   nativeBuildInputs = [ cmake ];