diff --git a/requirements.txt b/requirements.txt
index 6946d3b..de65cf2 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -24,7 +24,7 @@ matplotlib==1.5.3
 numexpr==2.6.1
 numpy==1.12.0
 pandas==0.19.1
-Pillow==3.4.2
+Pillow==9.0.0
 protobuf==3.0.0
 psutil==5.0.0
 scikit-learn==0.18.1