diff --git a/websocket_server/requirements.txt b/websocket_server/requirements.txt
index d343437..1ac567d 100644
--- a/websocket_server/requirements.txt
+++ b/websocket_server/requirements.txt
@@ -23,7 +23,7 @@ MarkupSafe==1.1.1
 numpy==1.14.5
 oauth2client==4.1.3
 oauthlib==3.1.0
-Pillow==7.1.2
+Pillow==9.3.0
 protobuf==3.11.3
 pyasn1==0.4.8
 pyasn1-modules==0.2.8