diff --git a/tools/wptrunner/requirements.txt b/tools/wptrunner/requirements.txt
index 24067fbcf9227e..d57c28d0f09a03 100644
--- a/tools/wptrunner/requirements.txt
+++ b/tools/wptrunner/requirements.txt
@@ -2,7 +2,7 @@ html5lib==1.1
 mozinfo==1.2.2  # https://bugzilla.mozilla.org/show_bug.cgi?id=1621226
 mozlog==7.1.0
 mozdebug==0.3.0
-pillow==8.4.0
+pillow==9.0.0
 urllib3[secure]==1.26.7
 requests==2.26.0
 six==1.16.0