diff --git a/util/weewx/requirements/amd64.txt b/util/weewx/requirements/amd64.txt
index 107faa5..7ffa6b9 100644
--- a/util/weewx/requirements/amd64.txt
+++ b/util/weewx/requirements/amd64.txt
@@ -1,5 +1,5 @@
 Cheetah==2.4.4
-pillow==4.1.1
+pillow==9.3.0
 pyephem==3.7.6
 pyserial==3.3
 PyUSB==1.0.0