diff --git a/.arcconfig b/.arcconfig
new file mode 100644
index 0000000000000000000000000000000000000000..5a888cdf81bbceb59f7653d84ac05273cb37cf02
--- /dev/null
+++ b/.arcconfig
@@ -0,0 +1,4 @@
+{
+  "repository.callsign" : "CABAL",
+  "phabricator.uri"     : "https://phabricator.haskell.org"
+}