diff --git a/setup.py b/setup.py
index 0b7a9e3d..1c1c515e 100644
--- a/setup.py
+++ b/setup.py
@@ -72,7 +72,7 @@
     # requirements files see:
     # https://packaging.python.org/en/latest/requirements.html
     install_requires=["PyQt5",
-                      "qtpy",
+                      "qtpy<2.4",
                       "astropy",
                       "numpy>=1.16.0",
                       "appdirs",