diff --git a/pkgs/python-packages.nix b/pkgs/python-packages.nix
--- a/pkgs/python-packages.nix
+++ b/pkgs/python-packages.nix
@@ -978,13 +978,13 @@
     };
   };
   psutil = super.buildPythonPackage {
-    name = "psutil-2.2.1";
+    name = "psutil-4.3.1";
     buildInputs = with self; [];
     doCheck = false;
     propagatedBuildInputs = with self; [];
     src = fetchurl {
-      url = "https://pypi.python.org/packages/df/47/ee54ef14dd40f8ce831a7581001a5096494dc99fe71586260ca6b531fe86/psutil-2.2.1.tar.gz";
-      md5 = "1a2b58cd9e3a53528bb6148f0c4d5244";
+      url = "https://pypi.python.org/packages/78/cc/f267a1371f229bf16db6a4e604428c3b032b823b83155bd33cef45e49a53/psutil-4.3.1.tar.gz";
+      md5 = "199a366dba829c88bddaf5b41d19ddc0";
     };
     meta = {
       license = [ pkgs.lib.licenses.bsdOriginal ];
diff --git a/requirements.txt b/requirements.txt
--- a/requirements.txt
+++ b/requirements.txt
@@ -90,7 +90,7 @@ nose==1.3.6
 objgraph==2.0.0
 packaging==15.2
 paramiko==1.15.1
-psutil==2.2.1
+psutil==4.3.1
 psycopg2==2.6.1
 py==1.4.29
 py-bcrypt==0.4