diff --git a/examples/http-dynamodb/Cargo.toml b/examples/http-dynamodb/Cargo.toml
index c3f6d8be..be95f867 100644
--- a/examples/http-dynamodb/Cargo.toml
+++ b/examples/http-dynamodb/Cargo.toml
@@ -11,15 +11,16 @@ edition = "2021"
 # and it will keep the alphabetic ordering for you.
 
 [dependencies]
-simple-error = "0.2.3"
-serde_json = "1.0"
-serde = { version = "1.0", features = ["derive"] }
+simple-error = "0.3.0"
+serde_json = "1.0.107"
+serde = { version = "1.0.189", features = ["derive"] }
+serde_dynamo = {version = "^4.2.7", features = ["aws-sdk-dynamodb+0_33"]}
 lambda_http = { path = "../../lambda-http" }
 lambda_runtime = { path = "../../lambda-runtime" }
-aws-sdk-dynamodb = "0.21.0"
-aws-config = "0.51.0"
-tokio = { version = "1", features = ["macros"] }
-tracing = { version = "0.1", features = ["log"] }
-tracing-subscriber = { version = "0.3", default-features = false, features = ["fmt"] }
+aws-sdk-dynamodb = "0.33.0"
+aws-config = "0.56.1"
+tokio = { version = "1.33.0", features = ["macros"] }
+tracing = { version = "0.1.40", features = ["log"] }
+tracing-subscriber = { version = "0.3.17", default-features = false, features = ["fmt"] }
 
 
diff --git a/examples/http-dynamodb/src/main.rs b/examples/http-dynamodb/src/main.rs
index 5a7030f9..b2e8af20 100644
--- a/examples/http-dynamodb/src/main.rs
+++ b/examples/http-dynamodb/src/main.rs
@@ -1,9 +1,10 @@
-use aws_sdk_dynamodb::model::AttributeValue;
-use aws_sdk_dynamodb::{Client, Error as OtherError};
+use aws_sdk_dynamodb::{Client};
 use lambda_http::{run, service_fn, Body, Error, Request, Response};
+use serde::{Deserialize, Serialize};
+use serde_dynamo::to_attribute_value;
 use tracing::info;
 
-#[derive(Clone, Debug, serde::Deserialize, serde::Serialize)]
+#[derive(Clone, Debug, Serialize, Deserialize)]
 pub struct Item {
     pub p_type: String,
     pub age: String,
@@ -76,12 +77,12 @@ async fn main() -> Result<(), Error> {
 
 // Add an item to a table.
 // snippet-start:[dynamodb.rust.add-item]
-pub async fn add_item(client: &Client, item: Item, table: &str) -> Result<(), OtherError> {
-    let user_av = AttributeValue::S(item.username);
-    let type_av = AttributeValue::S(item.p_type);
-    let age_av = AttributeValue::S(item.age);
-    let first_av = AttributeValue::S(item.first);
-    let last_av = AttributeValue::S(item.last);
+pub async fn add_item(client: &Client, item: Item, table: &str) -> Result<(), Error> {
+    let user_av = to_attribute_value(item.username)?;
+    let type_av = to_attribute_value(item.p_type)?;
+    let age_av = to_attribute_value(item.age)?;
+    let first_av = to_attribute_value(item.first)?;
+    let last_av = to_attribute_value(item.last)?;
 
     let request = client
         .put_item()