diff --git a/firefox.yaml b/firefox.yaml
new file mode 100644
index 0000000000000000000000000000000000000000..6992b05641ce129eb3c49889b2b3d2192da0afeb
--- /dev/null
+++ b/firefox.yaml
@@ -0,0 +1,4 @@
+version_control: github
+src_repo: mozilla/gecko-dev
+tag_prefix: ^B2G_
+seperator: _