diff --git a/requirements.dev.txt b/requirements.dev.txt
index cbd874fd..7142955c 100644
--- a/requirements.dev.txt
+++ b/requirements.dev.txt
@@ -4,4 +4,4 @@ scipy==1.7.3
 # numpy 1.22 seems to be missing packages for python 3.7, so we'll stay with
 # 1.21.6 until python 3.7 is dropped
 numpy==1.21.6
-pillow==9.1.0
+pillow==9.3.0