diff --git a/dev.yml b/dev.yml
index 2a0e9764..2e66e127 100644
--- a/dev.yml
+++ b/dev.yml
@@ -6,7 +6,7 @@ up:
         or:        [mysql@5.7]
         conflicts: [mysql-connector-c, mysql, mysql-client]
   - ruby: 2.7.2
-  - railgun
+  - isogun
   - bundler
 
 env:
diff --git a/railgun.yml b/isogun.yml
similarity index 71%
rename from railgun.yml
rename to isogun.yml
index a67f9023..15264a2c 100644
--- a/railgun.yml
+++ b/isogun.yml
@@ -2,14 +2,10 @@
 name: identity-cache
 
 vm:
-  image:      /opt/dev/misc/railgun-images/default
   ip_address: 192.168.64.98
   memory:     1G
   cores:      2
 
-volumes:
-  root: 1G
-
 services:
   - mysql
   - memcached