diff --git a/Lesson-4/activity_9/requirements.txt b/Lesson-4/activity_9/requirements.txt
index df528f0..37b5b48 100644
--- a/Lesson-4/activity_9/requirements.txt
+++ b/Lesson-4/activity_9/requirements.txt
@@ -21,7 +21,7 @@ lxml==4.1.1
 Markdown==2.6.10
 MarkupSafe==1.0
 nose==1.3.7
-numpy==1.13.3
+numpy==1.22.0
 pandas==0.21.1
 protobuf==3.5.0.post1
 python-dateutil==2.6.1