diff --git a/requirements.txt b/requirements.txt
index d2b5b0fc..d3b5bb0f 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -3,7 +3,7 @@ numpy==1.12.1
 pandas==0.19.2
 matplotlib==2.0.0
 tensorflow==1.0.0
-Pillow==4.1.0
+Pillow==9.3.0
 gym==0.8.1
 h5py==2.7.0
 scikit-image==0.13.0