diff --git a/EM-algorithm/requirements.txt b/EM-algorithm/requirements.txt
index af7665b..bb46c74 100644
--- a/EM-algorithm/requirements.txt
+++ b/EM-algorithm/requirements.txt
@@ -1,3 +1,3 @@
-numpy==1.15.4
+numpy==1.22.0
 matplotlib==3.0.3
 Pillow==6.2.0