diff --git a/requirements.txt b/requirements.txt
index 159254e..96422d9 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -5,7 +5,7 @@ scikit-image==0.13.1
 scipy==1.0.0
 
 # only used for reading images in draw.py
-Pillow==5.0.0
+Pillow==9.0.1
 
 # only used for creating nice plots for evaluation
 matplotlib==2.2.*
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