diff --git a/Dockerfile b/Dockerfile
index 89c4ee5ea..c68442c2c 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM sitespeedio/webbrowsers:chrome-74-firefox-67.0
+FROM sitespeedio/webbrowsers:chrome-74-firefox-67.0-2
 
 ENV SITESPEED_IO_BROWSERTIME__XVFB true
 ENV SITESPEED_IO_BROWSERTIME__DOCKER true