diff --git a/Dockerfile b/Dockerfile
index 3b3cef17c..eb27a7541 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM sitespeedio/webbrowsers:chrome-77-beta-firefox-68.0
+FROM sitespeedio/webbrowsers:chrome-77-beta-firefox-69.0
 
 ENV SITESPEED_IO_BROWSERTIME__XVFB true
 ENV SITESPEED_IO_BROWSERTIME__DOCKER true