diff --git a/lambdas/thumbnail/requirements.txt b/lambdas/thumbnail/requirements.txt
index 5264762d289..2df9d817775 100644
--- a/lambdas/thumbnail/requirements.txt
+++ b/lambdas/thumbnail/requirements.txt
@@ -33,7 +33,7 @@ numpy==1.24.1
     #   tifffile
 pdf2image==1.16.2
     # via t4-lambda-thumbnail (pyproject.toml)
-pillow==10.2.0
+pillow==10.3.0
     # via
     #   imageio
     #   pdf2image