diff --git a/setup.cfg b/setup.cfg
index cf827994..31c752e4 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -46,9 +46,9 @@ install_requires =
   psutil
   setuptools
   secretstorage; sys_platform != 'darwin'
-  pyobjc-core; sys_platform == 'darwin'
-  pyobjc-framework-Cocoa; sys_platform == 'darwin'
-  pyobjc-framework-LaunchServices; sys_platform == 'darwin'
+  pyobjc-core<9.0; sys_platform == 'darwin'
+  pyobjc-framework-Cocoa<9.0; sys_platform == 'darwin'
+  pyobjc-framework-LaunchServices<9.0; sys_platform == 'darwin'
 tests_require =
   pytest
   pytest-qt