diff --git a/pkgs/development/libraries/armadillo/default.nix b/pkgs/development/libraries/armadillo/default.nix
index 6c0b3c867a4..f6710d4fc57 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 = "9.850.1";
+  version = "9.860.1";
 
   src = fetchurl {
     url = "mirror://sourceforge/arma/armadillo-${version}.tar.xz";
-    sha256 = "07y0s87srj2wxbywmnxam9bif0x625n6b8np19832mvsb6wqkhyl";
+    sha256 = "1ab5y4ll6js2w4p9dabj2dmzzc3f8dja8dqsvy40azrvny58h0qn";
   };
 
   nativeBuildInputs = [ cmake ];
@@ -21,7 +21,7 @@ stdenv.mkDerivation rec {
 
   meta = with stdenv.lib; {
     description = "C++ linear algebra library";
-    homepage = http://arma.sourceforge.net;
+    homepage = "http://arma.sourceforge.net";
     license = licenses.asl20;
     platforms = platforms.unix;
     maintainers = with maintainers; [ juliendehos knedlsepp ];