diff --git a/requirements.txt b/requirements.txt
index 2e9f2a5..6ad240c 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -9,7 +9,7 @@ kiwisolver==1.1.0
 MarkupSafe==1.1.1
 matplotlib==3.1.1
 numpy==1.17.4
-Pillow==6.2.1
+Pillow==9.0.1
 pyparsing==2.4.5
 python-dateutil==2.8.1
 scipy==1.3.2