diff --git a/README.md b/README.md
index 793a497a..4c05133e 100644
--- a/README.md
+++ b/README.md
@@ -29,8 +29,7 @@ schema. For example the Post model for a blog might look like this:
 #[model]
 #[derive(Default)]
 struct Post {
-    #[auto]
-    id: i64,
+    id: AutoPk<i32>,
     title: String,
     body: String,
     published: bool,
diff --git a/docs/getting-started.md b/docs/getting-started.md
index 32e68237..251b2424 100644
--- a/docs/getting-started.md
+++ b/docs/getting-started.md
@@ -111,8 +111,7 @@ Now let's add a model to represent a blog post, and in the process take a look a
 ``` rust
 #[model]
 pub struct Post {
-    #[auto]
-    pub id: i32,
+    pub id: AutoPk<i32>,
     pub title: String,
     pub body: String,
     pub published: bool,
@@ -436,8 +435,7 @@ making the full model
 ``` rust
 #[model]
 pub struct Post {
-    #[auto]
-    pub id: i32,
+    pub id: AutoPk<i32>,
     pub title: String,
     pub body: String,
     pub published: bool,