diff --git a/pkgs/development/libraries/science/math/atlas/default.nix b/pkgs/development/libraries/science/math/atlas/default.nix
index 037de754a275..b1025a32ff46 100644
--- a/pkgs/development/libraries/science/math/atlas/default.nix
+++ b/pkgs/development/libraries/science/math/atlas/default.nix
@@ -1,10 +1,10 @@
 args: with args;
 
 stdenv.mkDerivation {
-  name = "atlas-3.8.2";
+  name = "atlas-3.9.9";
   src = fetchurl {
-    url = http://kent.dl.sourceforge.net/sourceforge/math-atlas/atlas3.8.2.tar.bz2;
-    sha256 = "1avbfppzgiws3nvqr7isr5a5pfbk3g4gfgd89xhyiywixjj3f7c6";
+    url = http://kent.dl.sourceforge.net/sourceforge/math-atlas/atlas3.9.9.tar.bz2;
+    sha256 = "0apbiqr0hlb38mrnlij0szsraxvxqfqainmp59xqj94pndx5s3yk";
   };
 
   # configure outside of the source directory