diff --git a/requirements.txt b/requirements.txt
index 49ec16b..f0e86c8 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -13,7 +13,7 @@ matplotlib==3.1.1
 networkx==2.4
 numpy==1.17.4
 opencv-python==4.1.1.26
-Pillow==6.2.1
+Pillow==9.0.1
 pyparsing==2.4.5
 python-dateutil==2.8.1
 PyWavelets==1.1.1