diff --git a/pkgs/development/python-modules/confluent-kafka/default.nix b/pkgs/development/python-modules/confluent-kafka/default.nix
index 65f6cb291b2d..4f9794b034e5 100644
--- a/pkgs/development/python-modules/confluent-kafka/default.nix
+++ b/pkgs/development/python-modules/confluent-kafka/default.nix
@@ -1,18 +1,18 @@
-{ stdenv, buildPythonPackage, fetchPypi, isPy3k, rdkafka, requests, avro3k, avro, futures}:
+{ stdenv, buildPythonPackage, fetchPypi, isPy3k, rdkafka, requests, avro3k, avro, futures, enum34 }:
 
 buildPythonPackage rec {
-  version = "0.11.6";
+  version = "1.0.0";
   pname = "confluent-kafka";
 
   src = fetchPypi {
     inherit pname version;
-    sha256 = "1dvzlafgr4g0n7382s5bgbls3f9wrgr0yxd70yyxl59wddwzfii7";
+    sha256 = "a7427944af963410479c2aaae27cc9d28db39c9a93299f14dcf16df80092c63a";
   };
 
-  buildInputs = [ rdkafka requests ] ++ (if isPy3k then [ avro3k ] else [ avro futures ]) ;
+  buildInputs = [ rdkafka requests ] ++ (if isPy3k then [ avro3k ] else [ enum34 avro futures ]) ;
 
-  # Tests fail for python3 under this pypi release
-  doCheck = if isPy3k then false else true;
+  # No tests in PyPi Tarball
+  doCheck = false;
 
   meta = with stdenv.lib; {
     description = "Confluent's Apache Kafka client for Python";
diff --git a/pkgs/development/python-modules/streamz/default.nix b/pkgs/development/python-modules/streamz/default.nix
index f779862dc610..87de719025dc 100644
--- a/pkgs/development/python-modules/streamz/default.nix
+++ b/pkgs/development/python-modules/streamz/default.nix
@@ -14,19 +14,13 @@
 
 buildPythonPackage rec {
   pname = "streamz";
-  version = "0.5.0";
+  version = "0.5.1";
 
   src = fetchPypi {
     inherit pname version;
-    sha256 = "cfdd42aa62df299f550768de5002ec83112136a34b44441db9d633b2df802fb4";
+    sha256 = "80c9ded1d6e68d3b78339deb6e9baf93a633d84b4a8875221e337ac06890103f";
   };
 
-  # Pytest 4.x fails to collect streamz-dataframe tests.
-  # Removing them in v0.5.0. TODO: re-enable in a future release
-  postPatch = ''
-    rm -rf streamz/dataframe/tests/*.py
-  '';
-
   checkInputs = [ pytest networkx distributed confluent-kafka graphviz ];
   propagatedBuildInputs = [
     tornado
@@ -35,8 +29,9 @@ buildPythonPackage rec {
     six
   ];
 
+  # Disable test_tcp_async because fails on sandbox build
   checkPhase = ''
-    pytest
+    pytest --deselect=streamz/tests/test_sources.py::test_tcp_async
   '';
 
   meta = with lib; {