diff --git a/foundry.toml b/foundry.toml
index 8616dcb..c6633c0 100644
--- a/foundry.toml
+++ b/foundry.toml
@@ -45,7 +45,7 @@ vibenet = "https://rpc.vibes.base.org/"
 runs = 10
 
 [profile.fork]
-base = true
+base = "cobalt"
 
 [fmt]
 line_length = 120