diff --git a/requirements.txt b/requirements.txt
index 25cedae..be6c485 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -9,7 +9,7 @@ Markdown==2.6.11
 matplotlib==2.1.0
 numpy==1.14.2
 olefile==0.44
-Pillow==4.3.0
+Pillow==9.3.0
 protobuf==3.5.2.post1
 pyparsing==2.2.0
 python-dateutil==2.6.1