diff --git a/tools/wptrunner/requirements_firefox.txt b/tools/wptrunner/requirements_firefox.txt
index 1f9033c09fe8db..ea6502249cf254 100644
--- a/tools/wptrunner/requirements_firefox.txt
+++ b/tools/wptrunner/requirements_firefox.txt
@@ -4,6 +4,6 @@ mozdevice==4.1.0
 mozinstall==2.0.1
 mozleak==0.2
 mozprofile==2.5.0
-mozrunner==8.2.1
+mozrunner==8.3.0
 mozversion==2.3.0
 psutil==5.9.1