diff --git a/pkgs/top-level/python-packages.nix b/pkgs/top-level/python-packages.nix
index c4c641d000de..77ef33aa3f3c 100644
--- a/pkgs/top-level/python-packages.nix
+++ b/pkgs/top-level/python-packages.nix
@@ -17041,6 +17041,29 @@ in modules // {
     };
   };
 
+  parsel = buildPythonPackage rec {
+    name = "parsel-${version}";
+    version = "1.0.3";
+
+    src = pkgs.fetchurl {
+      url = "mirror://pypi/p/parsel/${name}.tar.gz";
+      sha256 = "9c12c370feda864c2f541cecce9bfb3a2a682c6c59c097a852e7b040dc6b8431";
+    };
+
+    buildInputs = with self; [ pytest ];
+    propagatedBuildInputs = with self; [ six w3lib lxml cssselect ];
+
+    checkPhase = ''
+      py.test
+    '';
+
+    meta = {
+      homepage = "https://github.com/scrapy/parsel";
+      description = "Parsel is a library to extract data from HTML and XML using XPath and CSS selectors";
+      license = licenses.bsd3;
+    };
+  };
+
   partd = buildPythonPackage rec {
     name = "partd-${version}";
     version = "0.3.3";
@@ -18752,13 +18775,18 @@ in modules // {
 
   pydispatcher = buildPythonPackage (rec {
     version = "2.0.5";
-    disabled = isPy35;
     name = "pydispatcher-${version}";
     src = pkgs.fetchurl {
       url = "mirror://pypi/P/PyDispatcher/PyDispatcher-${version}.tar.gz";
       sha256 = "1bswbmhlbqdxlgbxlb6xrlm4k253sg8nvpl1whgsys8p3fg0cw2m";
     };
 
+    buildInputs = with self; [ pytest ];
+
+    checkPhase = ''
+      py.test
+    '';
+
     meta = {
       homepage = http://pydispatcher.sourceforge.net/;
       description = "Signal-registration and routing infrastructure for use in multiple contexts";
@@ -24401,10 +24429,10 @@ in modules // {
   twisted = buildPythonPackage rec {
 
     name = "Twisted-${version}";
-    version = "16.4.0";
+    version = "16.4.1";
     src = pkgs.fetchurl {
       url = "mirror://pypi/T/Twisted/${name}.tar.bz2";
-      sha256 = "cd8820901900542d21fb1dee2cd4d4d334fff130e3fc30b777f81dd7d7f2836e";
+      sha256 = "1d8d73f006c990744effb35588359fd44d43608649ac0b6b7edc71176e88e816";
     };
 
     propagatedBuildInputs = with self; [ zope_interface ];
@@ -29128,16 +29156,21 @@ in modules // {
 
   scrapy = buildPythonPackage rec {
     name = "Scrapy-${version}";
-    version = "1.0.5";
+    version = "1.1.2";
 
-    disabled = isPy3k;
+    buildInputs = with self; [ pytest botocore testfixtures pillow ];
+    propagatedBuildInputs = with self; [
+      six twisted w3lib lxml cssselect queuelib pyopenssl service-identity parsel pydispatcher
+    ];
 
-    buildInputs = with self ; [ pytest ];
-    propagatedBuildInputs = with self ; [ six twisted w3lib lxml cssselect queuelib pyopenssl service-identity ];
+    checkPhase = ''
+      env LC_ALL=en_US.UTF-8 py.test --ignore=tests/test_linkextractors_deprecated.py --ignore=tests/test_proxy_connect.py
+      # The ignored tests require mitmproxy, which depends on protobuf, but it's disabled on Python3
+    '';
 
     src = pkgs.fetchurl {
       url = "mirror://pypi/S/Scrapy/${name}.tar.gz";
-      sha256 = "0a51c785a310d65f6e70285a2da56d48ef7d049bd7fd60a08eef05c52328ca96";
+      sha256 = "a0a8c7bccbd598d2731ec9f267b8efbd8fb99767f826f8f2924a5610707a03d4";
     };
 
     meta = {