diff --git a/.github/workflows/screenshotter.yml b/.github/workflows/screenshotter.yml
index c8c79bbd..7cd4b6b9 100644
--- a/.github/workflows/screenshotter.yml
+++ b/.github/workflows/screenshotter.yml
@@ -16,7 +16,7 @@ jobs:
         - browser: chrome
           image: selenium/standalone-chrome:3.141.59-20210422
         - browser: firefox
-          image: selenium/standalone-firefox:3.141.59-20210311
+          image: selenium/standalone-firefox:3.141.59-20210422
         - browser: safari
           image: ylemkimon/selenium-proxy:latest
           browserstack:
diff --git a/dockers/screenshotter/screenshotter.sh b/dockers/screenshotter/screenshotter.sh
index 5ce6a2cc..5230bd74 100755
--- a/dockers/screenshotter/screenshotter.sh
+++ b/dockers/screenshotter/screenshotter.sh
@@ -17,7 +17,7 @@ cleanup() {
 container=
 trap cleanup EXIT
 status=0
-for browserTag in "firefox:3.141.59-20210311" "chrome:3.141.59-20210422"; do
+for browserTag in "firefox:3.141.59-20210422" "chrome:3.141.59-20210422"; do
     browser=${browserTag%:*}
     image=selenium/standalone-${browserTag}
     echo "Starting container for ${image}"
diff --git a/test/screenshotter/fonts/batang/HorizontalBraces-firefox.png b/test/screenshotter/fonts/batang/HorizontalBraces-firefox.png
new file mode 100644
index 00000000..713ffa3b
Binary files /dev/null and b/test/screenshotter/fonts/batang/HorizontalBraces-firefox.png differ
diff --git a/test/screenshotter/fonts/batang/Lap-firefox.png b/test/screenshotter/fonts/batang/Lap-firefox.png
new file mode 100644
index 00000000..84df66a6
Binary files /dev/null and b/test/screenshotter/fonts/batang/Lap-firefox.png differ
diff --git a/test/screenshotter/fonts/batang/Raisebox-firefox.png b/test/screenshotter/fonts/batang/Raisebox-firefox.png
new file mode 100644
index 00000000..c7809337
Binary files /dev/null and b/test/screenshotter/fonts/batang/Raisebox-firefox.png differ
diff --git a/test/screenshotter/fonts/batang/SvgReset-firefox.png b/test/screenshotter/fonts/batang/SvgReset-firefox.png
new file mode 100644
index 00000000..e563b5f7
Binary files /dev/null and b/test/screenshotter/fonts/batang/SvgReset-firefox.png differ