diff --git a/Cargo.lock b/Cargo.lock
index e42a889e24..2c7e6b2926 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -87,7 +87,7 @@ checksum = "683d7910e743518b0e34f1186f92494becacb047c7b6bf616c96772180fef923"
 
 [[package]]
 name = "amzn-codewhisperer-client"
-version = "0.1.8200"
+version = "0.1.8646"
 dependencies = [
  "aws-credential-types",
  "aws-runtime",
diff --git a/crates/amzn-codewhisperer-client/Cargo.toml b/crates/amzn-codewhisperer-client/Cargo.toml
index 792ed67667..53d65d69a9 100644
--- a/crates/amzn-codewhisperer-client/Cargo.toml
+++ b/crates/amzn-codewhisperer-client/Cargo.toml
@@ -12,7 +12,7 @@
 [package]
 edition = "2021"
 name = "amzn-codewhisperer-client"
-version = "0.1.8200"
+version = "0.1.8646"
 authors = ["Grant Gurvis <grangurv@amazon.com>"]
 build = false
 exclude = [
diff --git a/crates/amzn-codewhisperer-client/src/config.rs b/crates/amzn-codewhisperer-client/src/config.rs
index 180b8afcca..3fd4d42e44 100644
--- a/crates/amzn-codewhisperer-client/src/config.rs
+++ b/crates/amzn-codewhisperer-client/src/config.rs
@@ -609,6 +609,7 @@ impl Builder {
     /// # Examples
     ///
     /// Disabling identity caching:
+    ///
     /// ```no_run
     /// use amzn_codewhisperer_client::config::IdentityCache;
     ///
@@ -620,6 +621,7 @@ impl Builder {
     /// ```
     ///
     /// Customizing lazy caching:
+    ///
     /// ```no_run
     /// use std::time::Duration;
     ///
@@ -656,6 +658,7 @@ impl Builder {
     /// # Examples
     ///
     /// Disabling identity caching:
+    ///
     /// ```no_run
     /// use amzn_codewhisperer_client::config::IdentityCache;
     ///
@@ -667,6 +670,7 @@ impl Builder {
     /// ```
     ///
     /// Customizing lazy caching:
+    ///
     /// ```no_run
     /// use std::time::Duration;
     ///
@@ -1167,6 +1171,7 @@ impl Builder {
     ///
     /// Set the behavior major version to `latest`. This is equivalent to enabling the
     /// `behavior-version-latest` cargo feature.
+    ///
     /// ```no_run
     /// use amzn_codewhisperer_client::config::BehaviorVersion;
     ///
@@ -1178,6 +1183,7 @@ impl Builder {
     /// ```
     ///
     /// Customizing behavior major version:
+    ///
     /// ```no_run
     /// use amzn_codewhisperer_client::config::BehaviorVersion;
     ///
diff --git a/crates/amzn-codewhisperer-client/src/protocol_serde/shape_user_input_message.rs b/crates/amzn-codewhisperer-client/src/protocol_serde/shape_user_input_message.rs
index 716eb41329..2c43086677 100644
--- a/crates/amzn-codewhisperer-client/src/protocol_serde/shape_user_input_message.rs
+++ b/crates/amzn-codewhisperer-client/src/protocol_serde/shape_user_input_message.rs
@@ -30,5 +30,8 @@ pub fn ser_user_input_message(
         }
         array_6.finish();
     }
+    if let Some(var_9) = &input.model_id {
+        object.key("modelId").string(var_9.as_str());
+    }
     Ok(())
 }
diff --git a/crates/amzn-codewhisperer-client/src/types/_user_input_message.rs b/crates/amzn-codewhisperer-client/src/types/_user_input_message.rs
index 1d8e987387..725358a632 100644
--- a/crates/amzn-codewhisperer-client/src/types/_user_input_message.rs
+++ b/crates/amzn-codewhisperer-client/src/types/_user_input_message.rs
@@ -14,6 +14,8 @@ pub struct UserInputMessage {
     pub origin: ::std::option::Option<crate::types::Origin>,
     /// Images associated with the Chat Message.
     pub images: ::std::option::Option<::std::vec::Vec<crate::types::ImageBlock>>,
+    /// Unique identifier for the model used in this conversation
+    pub model_id: ::std::option::Option<::std::string::String>,
 }
 impl UserInputMessage {
     /// The content of the chat message.
@@ -44,6 +46,11 @@ impl UserInputMessage {
     pub fn images(&self) -> &[crate::types::ImageBlock] {
         self.images.as_deref().unwrap_or_default()
     }
+
+    /// Unique identifier for the model used in this conversation
+    pub fn model_id(&self) -> ::std::option::Option<&str> {
+        self.model_id.as_deref()
+    }
 }
 impl ::std::fmt::Debug for UserInputMessage {
     fn fmt(&self, f: &mut ::std::fmt::Formatter<'_>) -> ::std::fmt::Result {
@@ -53,6 +60,7 @@ impl ::std::fmt::Debug for UserInputMessage {
         formatter.field("user_intent", &self.user_intent);
         formatter.field("origin", &self.origin);
         formatter.field("images", &self.images);
+        formatter.field("model_id", &self.model_id);
         formatter.finish()
     }
 }
@@ -73,6 +81,7 @@ pub struct UserInputMessageBuilder {
     pub(crate) user_intent: ::std::option::Option<crate::types::UserIntent>,
     pub(crate) origin: ::std::option::Option<crate::types::Origin>,
     pub(crate) images: ::std::option::Option<::std::vec::Vec<crate::types::ImageBlock>>,
+    pub(crate) model_id: ::std::option::Option<::std::string::String>,
 }
 impl UserInputMessageBuilder {
     /// The content of the chat message.
@@ -170,6 +179,23 @@ impl UserInputMessageBuilder {
         &self.images
     }
 
+    /// Unique identifier for the model used in this conversation
+    pub fn model_id(mut self, input: impl ::std::convert::Into<::std::string::String>) -> Self {
+        self.model_id = ::std::option::Option::Some(input.into());
+        self
+    }
+
+    /// Unique identifier for the model used in this conversation
+    pub fn set_model_id(mut self, input: ::std::option::Option<::std::string::String>) -> Self {
+        self.model_id = input;
+        self
+    }
+
+    /// Unique identifier for the model used in this conversation
+    pub fn get_model_id(&self) -> &::std::option::Option<::std::string::String> {
+        &self.model_id
+    }
+
     /// Consumes the builder and constructs a [`UserInputMessage`](crate::types::UserInputMessage).
     /// This method will fail if any of the following fields are not set:
     /// - [`content`](crate::types::builders::UserInputMessageBuilder::content)
@@ -187,6 +213,7 @@ impl UserInputMessageBuilder {
             user_intent: self.user_intent,
             origin: self.origin,
             images: self.images,
+            model_id: self.model_id,
         })
     }
 }
@@ -198,6 +225,7 @@ impl ::std::fmt::Debug for UserInputMessageBuilder {
         formatter.field("user_intent", &self.user_intent);
         formatter.field("origin", &self.origin);
         formatter.field("images", &self.images);
+        formatter.field("model_id", &self.model_id);
         formatter.finish()
     }
 }