diff --git a/pkg_lifeblood/setup.cfg b/pkg_lifeblood/setup.cfg
index 8b2a50d1..8a8c960e 100644
--- a/pkg_lifeblood/setup.cfg
+++ b/pkg_lifeblood/setup.cfg
@@ -28,7 +28,7 @@ install_requires =
     pywin32==306; platform_system=="Windows"
     semantic-version~=2.10
     toml~=0.10
-    watchdog~=2.1
+    watchdog>=2.1,<6.0
 
 [options.packages.find]
 where = src