diff --git a/pkgs/development/python-modules/flexparser/default.nix b/pkgs/development/python-modules/flexparser/default.nix
index 51d7e223c9ba..1e5be670e34b 100644
--- a/pkgs/development/python-modules/flexparser/default.nix
+++ b/pkgs/development/python-modules/flexparser/default.nix
@@ -12,7 +12,6 @@
 
   # checks
   pytestCheckHook,
-  pytest-mpl,
 }:
 
 buildPythonPackage rec {
@@ -36,7 +35,6 @@ buildPythonPackage rec {
 
   nativeCheckInputs = [
     pytestCheckHook
-    pytest-mpl
   ];
 
   pythonImportsCheck = [ "flexparser" ];