diff --git a/requirements.txt b/requirements.txt
index 437f9a8..fbb862b 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -3,7 +3,7 @@ graphviz==0.8.4
 leveldb==0.194
 matplotlib==2.2.4
 numpy==1.16.3
-Pillow==6.0.0
+Pillow==9.0.1
 protobuf==2.6.1
 python-gflags==3.1.2
 scikit-image==0.14.2