diff --git a/fall_2022/requirements.txt b/fall_2022/requirements.txt
index a06446a6..51cf1067 100644
--- a/fall_2022/requirements.txt
+++ b/fall_2022/requirements.txt
@@ -22,7 +22,7 @@ nbconvert
 nbformat==5.0.7
 networkx==2.5
 notebook
-numpy
+numpy==1.19
 olefile==0.46
 pandocfilters==1.4.2
 pexpect==4.8.0