diff --git a/CHANGELOG.md b/CHANGELOG.md
index db711d51d..e0f778b85 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,8 +2,9 @@
 
 ## UNRELASED
 ### Added
-* Upgraded to second alpha of Browsertime 8.0.0
+* Upgraded to third alpha of Browsertime 8.0.0
 * Upgraded from AXE core 3.4.0 -> [3.4.1](https://github.com/dequelabs/axe-core/blob/develop/CHANGELOG.md#341-2019-12-11).
+* Upgrtaded to Firefox 72 in the Docker container.
 
 ## 11.9.3 - 2019-12-19
 ### Fixed
diff --git a/Dockerfile b/Dockerfile
index 6c4cbf985..ca64efe2f 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM sitespeedio/webbrowsers:chrome-79.0-firefox-71.0
+FROM sitespeedio/webbrowsers:chrome-79.0-firefox-72.0
 
 ENV SITESPEED_IO_BROWSERTIME__XVFB true
 ENV SITESPEED_IO_BROWSERTIME__DOCKER true