dependencies: bumped http servers, including gunicorn.

gunicorn==19.7.1
waitress==1.0.2

pkgs/python-packages.nix

@@ -224,13 +224,13 b''
     };
   };
   gunicorn = super.buildPythonPackage {
-    name = "gunicorn-19.6.0";
+    name = "gunicorn-19.7.1";
     buildInputs = with self; [];
     doCheck = false;
     propagatedBuildInputs = with self; [];
     src = fetchurl {
-      url = "https://pypi.python.org/packages/84/ce/7ea5396efad1cef682bbc4068e72a0276341d9d9d0f501da609fab9fcb80/gunicorn-19.6.0.tar.gz";
-      md5 = "338e5e8a83ea0f0625f768dba4597530";
+      url = "https://pypi.python.org/packages/30/3a/10bb213cede0cc4d13ac2263316c872a64bf4c819000c8ccd801f1d5f822/gunicorn-19.7.1.tar.gz";
+      md5 = "174d3c3cd670a5be0404d84c484e590c";
     };
     meta = {
       license = [ pkgs.lib.licenses.mit ];
@@ -741,13 +741,13 b''
     };
   };
   waitress = super.buildPythonPackage {
-    name = "waitress-1.0.1";
+    name = "waitress-1.0.2";
     buildInputs = with self; [];
     doCheck = false;
     propagatedBuildInputs = with self; [];
     src = fetchurl {
-      url = "https://pypi.python.org/packages/78/7d/84d11b96c3f60164dec3bef4a859a03aeae0231aa93f57fbe0d05fa4ff36/waitress-1.0.1.tar.gz";
-      md5 = "dda92358a7569669086155923a46e57c";
+      url = "https://pypi.python.org/packages/cd/f4/400d00863afa1e03618e31fd7e2092479a71b8c9718b00eb1eeb603746c6/waitress-1.0.2.tar.gz";
+      md5 = "b968f39e95d609f6194c6e50425d4bb7";
     };
     meta = {
       license = [ pkgs.lib.licenses.zpt21 ];

requirements.txt

@@ -27,14 +27,15 b' wheel==0.29.0'
 zope.deprecation==4.1.2
 zope.interface==4.1.3
 
+## http servers
+gevent==1.2.2
+greenlet==0.4.12
+gunicorn==19.7.1
+waitress==1.0.2
+
 ## debug
 ipdb==0.10.1
 ipython==5.1.0
-# http servers
-gevent==1.1.2
-greenlet==0.4.10
-gunicorn==19.6.0
-waitress==1.0.1
 
 ## test related requirements
 -r requirements_test.txt