diff --git a/pkgs/development/libraries/armadillo/default.nix b/pkgs/development/libraries/armadillo/default.nix
index ece38b2cb03..ecf337fc375 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 = "9.880.1";
+  version = "9.900.1";
 
   src = fetchurl {
     url = "mirror://sourceforge/arma/armadillo-${version}.tar.xz";
-    sha256 = "17sb9hylrr7wl63whr39ypjg7xps32k9z5zdgchj5dyq6n6kw3wh";
+    sha256 = "0dfn6wbr7mrh1nzg2rj642p4sycwchf0k743ipgdwvyh4ihsvmsk";
   };
 
   nativeBuildInputs = [ cmake ];