diff --git a/Main.lean b/Main.lean
index c79f999..623657a 100644
--- a/Main.lean
+++ b/Main.lean
@@ -11,7 +11,7 @@ open Rinha.Environment
 /--
 Rinha de backend basic application monad
 -/
-def app (db: Pgsql.Connection) : Ash.App Unit := do
+def app (env: Environment) (db: Pgsql.Connection) : Ash.App Unit := do
   post "/pessoas" $ λ conn => do
     let person : Option Person := conn.json
     match person with
@@ -19,7 +19,9 @@ def app (db: Pgsql.Connection) : Ash.App Unit := do
     | some person =>
       let res ← person.create! db
       match res with
-      | some person => conn.created person
+      | some person => do
+          let location := s!"http://{env.host}:{env.port}/pessoas/{person.id}"
+          conn.created person location
       | none        => conn.unprocessableEntity "Already exists."
 
   get "/pessoas/:id" $ λ conn => do
@@ -49,7 +51,7 @@ def main : IO Unit := do
 
   -- Connects to the database using the environment variables.
   let conn ← Pgsql.connect $ env.postgres.toConnectionString
-  let app := app conn
+  let app := app env conn
   IO.println s!"INFO: Database connection set up"
 
   -- Run the application with the environment variables host and port.
diff --git a/lake-manifest.json b/lake-manifest.json
index 642facd..3964881 100644
--- a/lake-manifest.json
+++ b/lake-manifest.json
@@ -34,6 +34,6 @@
   {"git":
    {"url": "https://github.com/algebraic-sofia/ash.git",
     "subDir?": null,
-    "rev": "b771f1bae9301e6131e9b08b039787f6c97db043",
+    "rev": "236b99b537f8b9d36b37b647f1b9827631335013",
     "name": "ash",
     "inputRev?": null}}]}