diff --git a/sphinx/requirements.txt b/sphinx/requirements.txt
index 1f9f1e6..426b5fa 100644
--- a/sphinx/requirements.txt
+++ b/sphinx/requirements.txt
@@ -34,7 +34,7 @@ packaging==20.9
 pandas==1.1.1
 pdf2image==1.14.0
 pdfminer3k==1.3.4
-Pillow==8.2.0
+Pillow==9.0.0
 plac==1.1.3
 ply==3.11
 preshed==3.0.5