diff --git a/pkgs/applications/virtualization/virtualbox/default.nix b/pkgs/applications/virtualization/virtualbox/default.nix
index 39ed68ce9f73..d1b4838491dc 100644
--- a/pkgs/applications/virtualization/virtualbox/default.nix
+++ b/pkgs/applications/virtualization/virtualbox/default.nix
@@ -4,11 +4,11 @@
 }:
 
 stdenv.mkDerivation {
-  name = "virtualbox-3.1.6-${kernel.version}";
+  name = "virtualbox-3.1.8-${kernel.version}";
 
   src = fetchurl {
-    url = http://download.virtualbox.org/virtualbox/3.1.6/VirtualBox-3.1.6-OSE.tar.bz2;
-    sha256 = "05m0gsihvg0fs73a9bcivvlqkwrxvzfnyn2l59nixvy8g7w4h0c4";
+    url = http://download.virtualbox.org/virtualbox/3.1.8/VirtualBox-3.1.8-OSE.tar.bz2;
+    sha256 = "118y12k9kv8nfhgnzn3z4d8v75jz6nvy7y1il84cj09lnkkqlz5p";
   };
 
   buildInputs = [iasl dev86 libxslt libxml2 xproto libX11 libXext libXcursor qt4 libIDL SDL hal libcap glib kernel python alsaLib curl];
diff --git a/pkgs/applications/virtualization/virtualbox/guest-additions/default.nix b/pkgs/applications/virtualization/virtualbox/guest-additions/default.nix
index 0c0ccc442de6..1618e36d9302 100644
--- a/pkgs/applications/virtualization/virtualbox/guest-additions/default.nix
+++ b/pkgs/applications/virtualization/virtualbox/guest-additions/default.nix
@@ -2,10 +2,10 @@
 , libX11, libXt, libXext, libXmu, libXcomposite, libXfixes}:
 
 stdenv.mkDerivation {
-  name = "VirtualBox-GuestAdditions-3.1.6";
+  name = "VirtualBox-GuestAdditions-3.1.8";
   src = fetchurl {
-    url = http://download.virtualbox.org/virtualbox/3.1.6/VBoxGuestAdditions_3.1.6.iso;
-    sha256 = "07vylsjs960yqgz2cn57sdhrhs0i3mkb286vnl7p86i7dfl0r08s";
+    url = http://download.virtualbox.org/virtualbox/3.1.8/VBoxGuestAdditions_3.1.8.iso;
+    sha256 = "11fn49zxmd7nxmqn9pcakmzj6j9f8kfb38czpl8fhbnl2k4ggj5q";
   };
   KERN_DIR = "${kernel}/lib/modules/*/build";
   buildInputs = [ patchelf cdrkit ];