diff --git a/pkgs/development/python-modules/ipykernel/default.nix b/pkgs/development/python-modules/ipykernel/default.nix
index ec1707f64c1..f4e7a109074 100644
--- a/pkgs/development/python-modules/ipykernel/default.nix
+++ b/pkgs/development/python-modules/ipykernel/default.nix
@@ -23,8 +23,6 @@ buildPythonPackage rec {
     sha256 = "1a08y677lpn80qzvv7z0smgggmr5m5ayf0bs6vds47xpxl9sss5k";
   };
 
-  checkInputs = [ flaky pytest nose ];
-
   propagatedBuildInputs = [ ipython jupyter_client traitlets tornado ];
 
   # https://github.com/ipython/ipykernel/pull/377
diff --git a/pkgs/development/python-modules/sqlalchemy-utils/default.nix b/pkgs/development/python-modules/sqlalchemy-utils/default.nix
index 3db00057c90..c58ec72498a 100644
--- a/pkgs/development/python-modules/sqlalchemy-utils/default.nix
+++ b/pkgs/development/python-modules/sqlalchemy-utils/default.nix
@@ -5,12 +5,12 @@
 
 buildPythonPackage rec {
   pname = "sqlalchemy-utils";
-  version = "0.35.0";
+  version = "0.36.0";
 
   src = fetchPypi {
     inherit version;
     pname = "SQLAlchemy-Utils";
-    sha256 = "0phsdcnm21qvxd00zmjd6yxbm1s0i7b1q8zrgfy8cqv9xpmz1w01";
+    sha256 = "1wkk6jj0jkp2hi3ziqw95q0b19zabpvzm6v5kixgnssj027hq0yv";
   };
 
   propagatedBuildInputs = [
diff --git a/pkgs/development/python-modules/tifffile/default.nix b/pkgs/development/python-modules/tifffile/default.nix
index 02ca26960d0..1f0e89d03ac 100644
--- a/pkgs/development/python-modules/tifffile/default.nix
+++ b/pkgs/development/python-modules/tifffile/default.nix
@@ -24,7 +24,7 @@ buildPythonPackage rec {
   '';
 
   propagatedBuildInputs = [ numpy ]
-    ++ lib.optionals isPy27 [ futures enum34 pathlib ];
+    ++ lib.optionals isPy27 [ futures enum34 pathlib ]
     ++ lib.optionals isPy3k [ imagecodecs-lite ];
 
   meta = with lib; {