diff --git a/requirements.txt b/requirements.txt
index 80f48e2c..c96f5ebb 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,3 +1,3 @@
-numpy>=1.17.4
+numpy>=1.17.4, <2.0
 PyQt5>=5.12.8
 PyOpenGL>=3.1.0