diff --git a/requirements.txt b/requirements.txt
index 1761b8e..1999337 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -27,7 +27,7 @@ notebook==5.5.0
 numpy==1.15.4
 opencv-python==3.4.2.17
 packaging==17.1
-Pillow==5.2.0
+Pillow==8.3.2
 pytest==3.5.1
 pytest-arraydiff==0.2
 pytest-astropy==0.3.0