diff --git a/pyproject.toml b/pyproject.toml
index 6f51f61..db2936d 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -31,6 +31,8 @@ dependencies = [
     "qtpy>=2.2",
     "openpiv>=0.22",
     "napari>=0.4.19",
+    pyqt5 = "=5.15.10", 
+    pyqt5-qt5 = "=5.15.2",
 ]
 
 [project.entry-points."napari.manifest"]