diff --git a/pkgs/top-level/python-packages.nix b/pkgs/top-level/python-packages.nix
index 1918012708e8..54ac6f06a85c 100644
--- a/pkgs/top-level/python-packages.nix
+++ b/pkgs/top-level/python-packages.nix
@@ -4197,6 +4197,24 @@ let
     };
   };
 
+  libthumbor = buildPythonPackage rec {
+    name = "libthumbor-${version}";
+    version = "1.2.0";
+
+    src = pkgs.fetchurl {
+      url = "https://pypi.python.org/packages/source/l/libthumbor/${name}.tar.gz";
+      sha256 = "09bbaf08124ee33ea4ef99881625bd20450b0b43ab90fd678479beba8c03f86e";
+    };
+
+    propagatedBuildInputs = with self; [ six pycrypto ];
+
+    meta = {
+      description = "libthumbor is the python extension to thumbor";
+      homepage = http://github.com/heynemann/libthumbor;
+      license = licenses.mit;
+    };
+
+  };
   lti = buildPythonPackage rec {
     version = "0.4.0";
     name = "PyLTI-${version}";
@@ -4729,6 +4747,11 @@ let
       maintainers = with maintainers; [ garbas iElectric ];
       platforms = platforms.all;
     };
+
+    # Failing tests
+    # https://github.com/Pylons/pyramid/issues/1899
+    doCheck = !isPy35;
+
   };
 
 
@@ -4771,11 +4794,12 @@ let
 
 
   pyramid_jinja2 = buildPythonPackage rec {
-    name = "pyramid_jinja2-1.9";
+    name = "pyramid_jinja2-${version}";
+    version = "2.5";
 
     src = pkgs.fetchurl {
-      url = "http://pypi.python.org/packages/source/p/pyramid_jinja2/${name}.zip";
-      md5 = "a6728117cad24749ddb39d2827cd9033";
+      url = "http://pypi.python.org/packages/source/p/pyramid_jinja2/${name}.tar.gz";
+      sha256 = "93c86e3103b454301f4d66640191aba047f2ab85ba75647aa18667b7448396bd";
     };
 
     buildInputs = with self; [ webtest ];
@@ -4993,18 +5017,28 @@ let
 
 
   statsd = buildPythonPackage rec {
-    name = "statsd-2.0.2";
+    name = "statsd-${version}";
+    version = "3.2.1";
 
     src = pkgs.fetchurl {
       url = "http://pypi.python.org/packages/source/s/statsd/${name}.tar.gz";
-      md5 = "476ef5b9004f6e2cb25c7da440bb53d0";
+      sha256 = "3fa92bf0192af926f7a0d9be031fe3fd0fbaa1992d42cf2f07e68f76ac18288e";
     };
 
-    buildInputs = with self; [ ];
+    buildInputs = with self; [ nose mock ];
 
     meta = {
       maintainers = with maintainers; [ iElectric ];
+      description = "A simple statsd client";
+      license = licenses.mit;
+      homepage = https://github.com/jsocol/pystatsd;
     };
+
+    # Failing test: ERROR: statsd.tests.test_ipv6_resolution_udp
+    patchPhase = ''
+      sed -i '233,235d' statsd/tests.py
+    '';
+
   };
 
   py3status = buildPythonPackage rec {
@@ -10394,6 +10428,22 @@ let
     };
   };
 
+  pexif = buildPythonPackage rec {
+    name = "pexif-${version}";
+    version = "0.15";
+
+    src = pkgs.fetchurl {
+      url = "https://pypi.python.org/packages/source/p/pexif/pexif-0.15.tar.gz";
+      sha256 = "45a3be037c7ba8b64bbfc48f3586402cc17de55bb9d7357ef2bc99954a18da3f";
+    };
+
+    meta = {
+      description = "A module for editing JPEG EXIF data";
+      homepage = http://www.benno.id.au/code/pexif/;
+      license = licenses.mit;
+    };
+  };
+
 
   pexpect = buildPythonPackage rec {
     version = "3.3";
@@ -16778,6 +16828,9 @@ let
       license = licenses.zpt20;
       maintainers = with maintainers; [ goibhniu ];
     };
+
+    # Python 3.5 is not yet supported.
+    disabled = isPy35;
   };
 
 
@@ -16857,19 +16910,6 @@ let
     };
   };
 
-  # Remove tornado 3.x once pythonPackages.thumbor is updated to 5.x
-  tornado_3 = buildPythonPackage rec {
-    name = "tornado-3.2.2";
-
-    propagatedBuildInputs = with self; [ backports_ssl_match_hostname_3_4_0_2 ];
-
-    src = pkgs.fetchurl {
-      url = "https://pypi.python.org/packages/source/t/tornado/${name}.tar.gz";
-      sha256 = "13mq6nx98999zql8p2zlg4sj2hr2sxq9w11mqzi7rjfjs0z2sn8i";
-    };
-
-    doCheck = false;
-  };
   tornado = buildPythonPackage rec {
     name = "tornado-${version}";
     version = "4.2.1";
@@ -18060,19 +18100,24 @@ let
   };
 
 
-  thumbor = self.buildPythonPackage rec {
-    name = "thumbor-4.0.4";
+  thumbor = buildPythonPackage rec {
+    name = "thumbor-${version}";
+    version = "5.2.1";
+
     disabled = ! isPy27;
 
+    buildInputs = with self; [ statsd nose ];
+
     propagatedBuildInputs = with self; [
-      # Remove pythonPackages.tornado 3.x once thumbor is updated to 5.x
-      tornado_3
+      tornado
       pycrypto
       pycurl
       pillow
       derpconf
       python_magic
-      thumborPexif
+      # thumborPexif
+      pexif
+      libthumbor
       (pkgs.opencv.override {
         gtk = null;
         glib = null;
@@ -18080,11 +18125,11 @@ let
         gstreamer = null;
         ffmpeg = null;
       })
-    ];
+    ] ++ optionals (!isPy3k) [ futures ];
 
     src = pkgs.fetchurl {
       url = "https://pypi.python.org/packages/source/t/thumbor/${name}.tar.gz";
-      md5 = "cf639a1cc57ee287b299ace450444408";
+      sha256 = "57b0d7e261e792b2e2c53a79c3d8c722964003d1828331995dc3491dc67db7d8";
     };
 
     meta = {