diff --git a/dtr_code/requirements.txt b/dtr_code/requirements.txt
index a0fc59b9..f76d4d31 100644
--- a/dtr_code/requirements.txt
+++ b/dtr_code/requirements.txt
@@ -10,7 +10,7 @@ numpy==1.17.3
 tqdm==4.31.1
 pandas==0.24.2
 matplotlib==2.2.3
-Pillow==5.1.0
+Pillow==9.3.0
 requests==2.21.0
 decorator==4.3.0
 attrs==18.1.0