diff --git a/requirements.txt b/requirements.txt
index b4f84ac..8bf882b 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,5 +1,6 @@
 gower==0.1.2
 hdbscan==0.8.33
+numpy>=1.20.0,<2.0.0
 opentsne==1.0.0
 pandas-stubs==1.5.2.221213
 pandas==1.5.3