1 files changed, 2 insertions, 1 deletions
diff --git a/.arcconfig b/.arcconfig
index a759f47..fa78c6d 100644
--- a/.arcconfig
+++ b/.arcconfig
@@ -1,4 +1,5 @@
 {
 	"project.name": "S",
-	"phabricator.uri" : "https://reviews.freebsd.org/"
+	"phabricator.uri" : "https://reviews.freebsd.org/",
+	"history.immutable" : true
 }