diff --git a/modules/openapi-generator/src/main/resources/rust/model.mustache b/modules/openapi-generator/src/main/resources/rust/model.mustache
index ebd0a455dfd..c4ed5beb64d 100644
--- a/modules/openapi-generator/src/main/resources/rust/model.mustache
+++ b/modules/openapi-generator/src/main/resources/rust/model.mustache
@@ -56,7 +56,7 @@ pub enum {{{classname}}} {
 {{!-- for non-enum schemas --}}
 {{^isEnum}}
 {{^discriminator}}
-#[derive(Clone, Debug, PartialEq, Serialize, Deserialize)]
+#[derive(Clone, Debug, PartialEq, Default, Serialize, Deserialize)]
 pub struct {{{classname}}} {
 {{#vars}}
     {{#description}}
diff --git a/modules/openapi-generator/src/main/resources/rust/reqwest/api.mustache b/modules/openapi-generator/src/main/resources/rust/reqwest/api.mustache
index c37112258ba..02a6077a159 100644
--- a/modules/openapi-generator/src/main/resources/rust/reqwest/api.mustache
+++ b/modules/openapi-generator/src/main/resources/rust/reqwest/api.mustache
@@ -11,7 +11,7 @@ use super::{Error, configuration};
 {{#allParams}}
 {{#-first}}
 /// struct for passing parameters to the method `{{operationId}}`
-#[derive(Clone, Debug)]
+#[derive(Clone, Debug, Default)]
 pub struct {{{operationIdCamelCase}}}Params {
 {{/-first}}
     {{#description}}
diff --git a/samples/client/petstore/rust/hyper/petstore/src/models/api_response.rs b/samples/client/petstore/rust/hyper/petstore/src/models/api_response.rs
index 16c49d8d61d..eff3b44e36b 100644
--- a/samples/client/petstore/rust/hyper/petstore/src/models/api_response.rs
+++ b/samples/client/petstore/rust/hyper/petstore/src/models/api_response.rs
@@ -12,7 +12,7 @@
 
 
 
-#[derive(Clone, Debug, PartialEq, Serialize, Deserialize)]
+#[derive(Clone, Debug, PartialEq, Default, Serialize, Deserialize)]
 pub struct ApiResponse {
     #[serde(rename = "code", skip_serializing_if = "Option::is_none")]
     pub code: Option<i32>,
diff --git a/samples/client/petstore/rust/hyper/petstore/src/models/category.rs b/samples/client/petstore/rust/hyper/petstore/src/models/category.rs
index ed937ac261d..750bdeddd6f 100644
--- a/samples/client/petstore/rust/hyper/petstore/src/models/category.rs
+++ b/samples/client/petstore/rust/hyper/petstore/src/models/category.rs
@@ -12,7 +12,7 @@
 
 
 
-#[derive(Clone, Debug, PartialEq, Serialize, Deserialize)]
+#[derive(Clone, Debug, PartialEq, Default, Serialize, Deserialize)]
 pub struct Category {
     #[serde(rename = "id", skip_serializing_if = "Option::is_none")]
     pub id: Option<i64>,
diff --git a/samples/client/petstore/rust/hyper/petstore/src/models/order.rs b/samples/client/petstore/rust/hyper/petstore/src/models/order.rs
index c64eae6d4ff..3e6a00aaeae 100644
--- a/samples/client/petstore/rust/hyper/petstore/src/models/order.rs
+++ b/samples/client/petstore/rust/hyper/petstore/src/models/order.rs
@@ -12,7 +12,7 @@
 
 
 
-#[derive(Clone, Debug, PartialEq, Serialize, Deserialize)]
+#[derive(Clone, Debug, PartialEq, Default, Serialize, Deserialize)]
 pub struct Order {
     #[serde(rename = "id", skip_serializing_if = "Option::is_none")]
     pub id: Option<i64>,
diff --git a/samples/client/petstore/rust/hyper/petstore/src/models/pet.rs b/samples/client/petstore/rust/hyper/petstore/src/models/pet.rs
index 1e055fc00f8..358961f2c71 100644
--- a/samples/client/petstore/rust/hyper/petstore/src/models/pet.rs
+++ b/samples/client/petstore/rust/hyper/petstore/src/models/pet.rs
@@ -12,7 +12,7 @@
 
 
 
-#[derive(Clone, Debug, PartialEq, Serialize, Deserialize)]
+#[derive(Clone, Debug, PartialEq, Default, Serialize, Deserialize)]
 pub struct Pet {
     #[serde(rename = "id", skip_serializing_if = "Option::is_none")]
     pub id: Option<i64>,
diff --git a/samples/client/petstore/rust/hyper/petstore/src/models/tag.rs b/samples/client/petstore/rust/hyper/petstore/src/models/tag.rs
index e0ae6e9efcc..b5813027846 100644
--- a/samples/client/petstore/rust/hyper/petstore/src/models/tag.rs
+++ b/samples/client/petstore/rust/hyper/petstore/src/models/tag.rs
@@ -12,7 +12,7 @@
 
 
 
-#[derive(Clone, Debug, PartialEq, Serialize, Deserialize)]
+#[derive(Clone, Debug, PartialEq, Default, Serialize, Deserialize)]
 pub struct Tag {
     #[serde(rename = "id", skip_serializing_if = "Option::is_none")]
     pub id: Option<i64>,
diff --git a/samples/client/petstore/rust/hyper/petstore/src/models/user.rs b/samples/client/petstore/rust/hyper/petstore/src/models/user.rs
index 360df3b9ec3..746cb571f49 100644
--- a/samples/client/petstore/rust/hyper/petstore/src/models/user.rs
+++ b/samples/client/petstore/rust/hyper/petstore/src/models/user.rs
@@ -12,7 +12,7 @@
 
 
 
-#[derive(Clone, Debug, PartialEq, Serialize, Deserialize)]
+#[derive(Clone, Debug, PartialEq, Default, Serialize, Deserialize)]
 pub struct User {
     #[serde(rename = "id", skip_serializing_if = "Option::is_none")]
     pub id: Option<i64>,
diff --git a/samples/client/petstore/rust/reqwest/petstore-async/src/apis/pet_api.rs b/samples/client/petstore/rust/reqwest/petstore-async/src/apis/pet_api.rs
index f98bb21e72a..08aea52a52b 100644
--- a/samples/client/petstore/rust/reqwest/petstore-async/src/apis/pet_api.rs
+++ b/samples/client/petstore/rust/reqwest/petstore-async/src/apis/pet_api.rs
@@ -15,14 +15,14 @@ use crate::apis::ResponseContent;
 use super::{Error, configuration};
 
 /// struct for passing parameters to the method `add_pet`
-#[derive(Clone, Debug)]
+#[derive(Clone, Debug, Default)]
 pub struct AddPetParams {
     /// Pet object that needs to be added to the store
     pub pet: crate::models::Pet
 }
 
 /// struct for passing parameters to the method `delete_pet`
-#[derive(Clone, Debug)]
+#[derive(Clone, Debug, Default)]
 pub struct DeletePetParams {
     /// Pet id to delete
     pub pet_id: i64,
@@ -30,35 +30,35 @@ pub struct DeletePetParams {
 }
 
 /// struct for passing parameters to the method `find_pets_by_status`
-#[derive(Clone, Debug)]
+#[derive(Clone, Debug, Default)]
 pub struct FindPetsByStatusParams {
     /// Status values that need to be considered for filter
     pub status: Vec<String>
 }
 
 /// struct for passing parameters to the method `find_pets_by_tags`
-#[derive(Clone, Debug)]
+#[derive(Clone, Debug, Default)]
 pub struct FindPetsByTagsParams {
     /// Tags to filter by
     pub tags: Vec<String>
 }
 
 /// struct for passing parameters to the method `get_pet_by_id`
-#[derive(Clone, Debug)]
+#[derive(Clone, Debug, Default)]
 pub struct GetPetByIdParams {
     /// ID of pet to return
     pub pet_id: i64
 }
 
 /// struct for passing parameters to the method `update_pet`
-#[derive(Clone, Debug)]
+#[derive(Clone, Debug, Default)]
 pub struct UpdatePetParams {
     /// Pet object that needs to be added to the store
     pub pet: crate::models::Pet
 }
 
 /// struct for passing parameters to the method `update_pet_with_form`
-#[derive(Clone, Debug)]
+#[derive(Clone, Debug, Default)]
 pub struct UpdatePetWithFormParams {
     /// ID of pet that needs to be updated
     pub pet_id: i64,
@@ -69,7 +69,7 @@ pub struct UpdatePetWithFormParams {
 }
 
 /// struct for passing parameters to the method `upload_file`
-#[derive(Clone, Debug)]
+#[derive(Clone, Debug, Default)]
 pub struct UploadFileParams {
     /// ID of pet to update
     pub pet_id: i64,
diff --git a/samples/client/petstore/rust/reqwest/petstore-async/src/apis/store_api.rs b/samples/client/petstore/rust/reqwest/petstore-async/src/apis/store_api.rs
index 13fd06a985e..6766b0747d7 100644
--- a/samples/client/petstore/rust/reqwest/petstore-async/src/apis/store_api.rs
+++ b/samples/client/petstore/rust/reqwest/petstore-async/src/apis/store_api.rs
@@ -15,21 +15,21 @@ use crate::apis::ResponseContent;
 use super::{Error, configuration};
 
 /// struct for passing parameters to the method `delete_order`
-#[derive(Clone, Debug)]
+#[derive(Clone, Debug, Default)]
 pub struct DeleteOrderParams {
     /// ID of the order that needs to be deleted
     pub order_id: String
 }
 
 /// struct for passing parameters to the method `get_order_by_id`
-#[derive(Clone, Debug)]
+#[derive(Clone, Debug, Default)]
 pub struct GetOrderByIdParams {
     /// ID of pet that needs to be fetched
     pub order_id: i64
 }
 
 /// struct for passing parameters to the method `place_order`
-#[derive(Clone, Debug)]
+#[derive(Clone, Debug, Default)]
 pub struct PlaceOrderParams {
     /// order placed for purchasing the pet
     pub order: crate::models::Order
diff --git a/samples/client/petstore/rust/reqwest/petstore-async/src/apis/user_api.rs b/samples/client/petstore/rust/reqwest/petstore-async/src/apis/user_api.rs
index b4a57fd726d..1171bfb3cb8 100644
--- a/samples/client/petstore/rust/reqwest/petstore-async/src/apis/user_api.rs
+++ b/samples/client/petstore/rust/reqwest/petstore-async/src/apis/user_api.rs
@@ -15,42 +15,42 @@ use crate::apis::ResponseContent;
 use super::{Error, configuration};
 
 /// struct for passing parameters to the method `create_user`
-#[derive(Clone, Debug)]
+#[derive(Clone, Debug, Default)]
 pub struct CreateUserParams {
     /// Created user object
     pub user: crate::models::User
 }
 
 /// struct for passing parameters to the method `create_users_with_array_input`
-#[derive(Clone, Debug)]
+#[derive(Clone, Debug, Default)]
 pub struct CreateUsersWithArrayInputParams {
     /// List of user object
     pub user: Vec<crate::models::User>
 }
 
 /// struct for passing parameters to the method `create_users_with_list_input`
-#[derive(Clone, Debug)]
+#[derive(Clone, Debug, Default)]
 pub struct CreateUsersWithListInputParams {
     /// List of user object
     pub user: Vec<crate::models::User>
 }
 
 /// struct for passing parameters to the method `delete_user`
-#[derive(Clone, Debug)]
+#[derive(Clone, Debug, Default)]
 pub struct DeleteUserParams {
     /// The name that needs to be deleted
     pub username: String
 }
 
 /// struct for passing parameters to the method `get_user_by_name`
-#[derive(Clone, Debug)]
+#[derive(Clone, Debug, Default)]
 pub struct GetUserByNameParams {
     /// The name that needs to be fetched. Use user1 for testing.
     pub username: String
 }
 
 /// struct for passing parameters to the method `login_user`
-#[derive(Clone, Debug)]
+#[derive(Clone, Debug, Default)]
 pub struct LoginUserParams {
     /// The user name for login
     pub username: String,
@@ -59,7 +59,7 @@ pub struct LoginUserParams {
 }
 
 /// struct for passing parameters to the method `update_user`
-#[derive(Clone, Debug)]
+#[derive(Clone, Debug, Default)]
 pub struct UpdateUserParams {
     /// name that need to be deleted
     pub username: String,
diff --git a/samples/client/petstore/rust/reqwest/petstore-async/src/models/api_response.rs b/samples/client/petstore/rust/reqwest/petstore-async/src/models/api_response.rs
index 16c49d8d61d..eff3b44e36b 100644
--- a/samples/client/petstore/rust/reqwest/petstore-async/src/models/api_response.rs
+++ b/samples/client/petstore/rust/reqwest/petstore-async/src/models/api_response.rs
@@ -12,7 +12,7 @@
 
 
 
-#[derive(Clone, Debug, PartialEq, Serialize, Deserialize)]
+#[derive(Clone, Debug, PartialEq, Default, Serialize, Deserialize)]
 pub struct ApiResponse {
     #[serde(rename = "code", skip_serializing_if = "Option::is_none")]
     pub code: Option<i32>,
diff --git a/samples/client/petstore/rust/reqwest/petstore-async/src/models/category.rs b/samples/client/petstore/rust/reqwest/petstore-async/src/models/category.rs
index ed937ac261d..750bdeddd6f 100644
--- a/samples/client/petstore/rust/reqwest/petstore-async/src/models/category.rs
+++ b/samples/client/petstore/rust/reqwest/petstore-async/src/models/category.rs
@@ -12,7 +12,7 @@
 
 
 
-#[derive(Clone, Debug, PartialEq, Serialize, Deserialize)]
+#[derive(Clone, Debug, PartialEq, Default, Serialize, Deserialize)]
 pub struct Category {
     #[serde(rename = "id", skip_serializing_if = "Option::is_none")]
     pub id: Option<i64>,
diff --git a/samples/client/petstore/rust/reqwest/petstore-async/src/models/order.rs b/samples/client/petstore/rust/reqwest/petstore-async/src/models/order.rs
index c64eae6d4ff..3e6a00aaeae 100644
--- a/samples/client/petstore/rust/reqwest/petstore-async/src/models/order.rs
+++ b/samples/client/petstore/rust/reqwest/petstore-async/src/models/order.rs
@@ -12,7 +12,7 @@
 
 
 
-#[derive(Clone, Debug, PartialEq, Serialize, Deserialize)]
+#[derive(Clone, Debug, PartialEq, Default, Serialize, Deserialize)]
 pub struct Order {
     #[serde(rename = "id", skip_serializing_if = "Option::is_none")]
     pub id: Option<i64>,
diff --git a/samples/client/petstore/rust/reqwest/petstore-async/src/models/pet.rs b/samples/client/petstore/rust/reqwest/petstore-async/src/models/pet.rs
index 1e055fc00f8..358961f2c71 100644
--- a/samples/client/petstore/rust/reqwest/petstore-async/src/models/pet.rs
+++ b/samples/client/petstore/rust/reqwest/petstore-async/src/models/pet.rs
@@ -12,7 +12,7 @@
 
 
 
-#[derive(Clone, Debug, PartialEq, Serialize, Deserialize)]
+#[derive(Clone, Debug, PartialEq, Default, Serialize, Deserialize)]
 pub struct Pet {
     #[serde(rename = "id", skip_serializing_if = "Option::is_none")]
     pub id: Option<i64>,
diff --git a/samples/client/petstore/rust/reqwest/petstore-async/src/models/tag.rs b/samples/client/petstore/rust/reqwest/petstore-async/src/models/tag.rs
index e0ae6e9efcc..b5813027846 100644
--- a/samples/client/petstore/rust/reqwest/petstore-async/src/models/tag.rs
+++ b/samples/client/petstore/rust/reqwest/petstore-async/src/models/tag.rs
@@ -12,7 +12,7 @@
 
 
 
-#[derive(Clone, Debug, PartialEq, Serialize, Deserialize)]
+#[derive(Clone, Debug, PartialEq, Default, Serialize, Deserialize)]
 pub struct Tag {
     #[serde(rename = "id", skip_serializing_if = "Option::is_none")]
     pub id: Option<i64>,
diff --git a/samples/client/petstore/rust/reqwest/petstore-async/src/models/user.rs b/samples/client/petstore/rust/reqwest/petstore-async/src/models/user.rs
index 360df3b9ec3..746cb571f49 100644
--- a/samples/client/petstore/rust/reqwest/petstore-async/src/models/user.rs
+++ b/samples/client/petstore/rust/reqwest/petstore-async/src/models/user.rs
@@ -12,7 +12,7 @@
 
 
 
-#[derive(Clone, Debug, PartialEq, Serialize, Deserialize)]
+#[derive(Clone, Debug, PartialEq, Default, Serialize, Deserialize)]
 pub struct User {
     #[serde(rename = "id", skip_serializing_if = "Option::is_none")]
     pub id: Option<i64>,
diff --git a/samples/client/petstore/rust/reqwest/petstore/src/models/api_response.rs b/samples/client/petstore/rust/reqwest/petstore/src/models/api_response.rs
index 16c49d8d61d..eff3b44e36b 100644
--- a/samples/client/petstore/rust/reqwest/petstore/src/models/api_response.rs
+++ b/samples/client/petstore/rust/reqwest/petstore/src/models/api_response.rs
@@ -12,7 +12,7 @@
 
 
 
-#[derive(Clone, Debug, PartialEq, Serialize, Deserialize)]
+#[derive(Clone, Debug, PartialEq, Default, Serialize, Deserialize)]
 pub struct ApiResponse {
     #[serde(rename = "code", skip_serializing_if = "Option::is_none")]
     pub code: Option<i32>,
diff --git a/samples/client/petstore/rust/reqwest/petstore/src/models/category.rs b/samples/client/petstore/rust/reqwest/petstore/src/models/category.rs
index ed937ac261d..750bdeddd6f 100644
--- a/samples/client/petstore/rust/reqwest/petstore/src/models/category.rs
+++ b/samples/client/petstore/rust/reqwest/petstore/src/models/category.rs
@@ -12,7 +12,7 @@
 
 
 
-#[derive(Clone, Debug, PartialEq, Serialize, Deserialize)]
+#[derive(Clone, Debug, PartialEq, Default, Serialize, Deserialize)]
 pub struct Category {
     #[serde(rename = "id", skip_serializing_if = "Option::is_none")]
     pub id: Option<i64>,
diff --git a/samples/client/petstore/rust/reqwest/petstore/src/models/order.rs b/samples/client/petstore/rust/reqwest/petstore/src/models/order.rs
index c64eae6d4ff..3e6a00aaeae 100644
--- a/samples/client/petstore/rust/reqwest/petstore/src/models/order.rs
+++ b/samples/client/petstore/rust/reqwest/petstore/src/models/order.rs
@@ -12,7 +12,7 @@
 
 
 
-#[derive(Clone, Debug, PartialEq, Serialize, Deserialize)]
+#[derive(Clone, Debug, PartialEq, Default, Serialize, Deserialize)]
 pub struct Order {
     #[serde(rename = "id", skip_serializing_if = "Option::is_none")]
     pub id: Option<i64>,
diff --git a/samples/client/petstore/rust/reqwest/petstore/src/models/pet.rs b/samples/client/petstore/rust/reqwest/petstore/src/models/pet.rs
index 1e055fc00f8..358961f2c71 100644
--- a/samples/client/petstore/rust/reqwest/petstore/src/models/pet.rs
+++ b/samples/client/petstore/rust/reqwest/petstore/src/models/pet.rs
@@ -12,7 +12,7 @@
 
 
 
-#[derive(Clone, Debug, PartialEq, Serialize, Deserialize)]
+#[derive(Clone, Debug, PartialEq, Default, Serialize, Deserialize)]
 pub struct Pet {
     #[serde(rename = "id", skip_serializing_if = "Option::is_none")]
     pub id: Option<i64>,
diff --git a/samples/client/petstore/rust/reqwest/petstore/src/models/tag.rs b/samples/client/petstore/rust/reqwest/petstore/src/models/tag.rs
index e0ae6e9efcc..b5813027846 100644
--- a/samples/client/petstore/rust/reqwest/petstore/src/models/tag.rs
+++ b/samples/client/petstore/rust/reqwest/petstore/src/models/tag.rs
@@ -12,7 +12,7 @@
 
 
 
-#[derive(Clone, Debug, PartialEq, Serialize, Deserialize)]
+#[derive(Clone, Debug, PartialEq, Default, Serialize, Deserialize)]
 pub struct Tag {
     #[serde(rename = "id", skip_serializing_if = "Option::is_none")]
     pub id: Option<i64>,
diff --git a/samples/client/petstore/rust/reqwest/petstore/src/models/user.rs b/samples/client/petstore/rust/reqwest/petstore/src/models/user.rs
index 360df3b9ec3..746cb571f49 100644
--- a/samples/client/petstore/rust/reqwest/petstore/src/models/user.rs
+++ b/samples/client/petstore/rust/reqwest/petstore/src/models/user.rs
@@ -12,7 +12,7 @@
 
 
 
-#[derive(Clone, Debug, PartialEq, Serialize, Deserialize)]
+#[derive(Clone, Debug, PartialEq, Default, Serialize, Deserialize)]
 pub struct User {
     #[serde(rename = "id", skip_serializing_if = "Option::is_none")]
     pub id: Option<i64>,