diff --git a/pkgs/development/python-modules/colorcet/default.nix b/pkgs/development/python-modules/colorcet/default.nix
index 6198e4e1b281..207653375144 100644
--- a/pkgs/development/python-modules/colorcet/default.nix
+++ b/pkgs/development/python-modules/colorcet/default.nix
@@ -24,7 +24,6 @@ buildPythonPackage rec {
   ];
 
   checkInputs = [
-    nbsmoke
     pytest
     flake8
     pytest-mpl