diff --git a/grid_configuration.yml b/grid_configuration.yml
index b53f5c9..2dd1466 100644
--- a/grid_configuration.yml
+++ b/grid_configuration.yml
@@ -7,12 +7,28 @@ hub:
          browser: "*firefox /Applications/Firefox 4.app/Contents/MacOS/firefox-bin"
        - name: "Firefox 5 on Mac OS X"
          browser: "*firefox /Applications/Firefox 5.app/Contents/MacOS/firefox-bin"
+       - name: "Firefox 6 on Mac OS X"
+         browser: "*firefox /Applications/Firefox 6.app/Contents/MacOS/firefox-bin"
        - name: "Firefox Beta on Mac OS X"
          browser: "*firefox /Applications/Firefox Beta.app/Contents/MacOS/firefox-bin"
+       - name: "Firefox Aurora on Mac OS X"
+         browser: "*firefox /Applications/Aurora.app/Contents/MacOS/firefox-bin"
+       - name: "Firefox Nightly on Mac OS X"
+         browser: "*firefox /Applications/Nightly.app/Contents/MacOS/firefox-bin"
        - name: "Firefox 3.6 on Windows 7"
          browser: "*firefox C:/Program Files/Mozilla Firefox 3.6/firefox.exe"
        - name: "Firefox 4 on Windows 7"
          browser: "*firefox C:/Program Files/Mozilla Firefox 4/firefox.exe"
+       - name: "Firefox 5 on Windows 7"
+         browser: "*firefox C:/Program Files/Mozilla Firefox 5/firefox.exe"
+       - name: "Firefox 6 on Windows 7"
+         browser: "*firefox C:/Program Files/Mozilla Firefox 6/firefox.exe"
+       - name: "Firefox Beta on Windows 7"
+         browser: "*firefox C:/Program Files/Mozilla Firefox Beta/firefox.exe"
+       - name: "Firefox Aurora on Windows 7"
+         browser: "*firefox C:/Program Files/Aurora/firefox.exe"
+       - name: "Firefox Nightly on Windows 7"
+         browser: "*firefox C:/Program Files/Nightly/firefox.exe"
        - name: "Internet Explorer 8 on Windows 7"
          browser: "*iexplore"
        - name: "Internet Explorer 9 on Windows 7"