diff --git a/pkgs/development/libraries/armadillo/default.nix b/pkgs/development/libraries/armadillo/default.nix
index 63ccedd56a19..72c1214970ce 100644
--- a/pkgs/development/libraries/armadillo/default.nix
+++ b/pkgs/development/libraries/armadillo/default.nix
@@ -2,11 +2,11 @@
 
 stdenv.mkDerivation rec {
   pname = "armadillo";
-  version = "12.6.6";
+  version = "12.6.7";
 
   src = fetchurl {
     url = "mirror://sourceforge/arma/armadillo-${version}.tar.xz";
-    hash = "sha256-OFiw/UMXcq8DKtPzXCrrVOjavqWRaefR6fzNeLyCrTU=";
+    hash = "sha256-3zIGS99cRxU88YCzwgEsihlKB+6JJlSmkUtIb/8s+mk=";
   };
 
   nativeBuildInputs = [ cmake ];