diff --git a/async-openai/src/client.rs b/async-openai/src/client.rs
index d73a2329..1af00e1b 100644
--- a/async-openai/src/client.rs
+++ b/async-openai/src/client.rs
@@ -73,102 +73,102 @@ impl<C: Config> Client<C> {
     // API groups
 
     /// To call [Models] group related APIs using this client.
-    pub fn models(&self) -> Models<C> {
+    pub fn models(&self) -> Models<'_, C> {
         Models::new(self)
     }
 
     /// To call [Completions] group related APIs using this client.
-    pub fn completions(&self) -> Completions<C> {
+    pub fn completions(&self) -> Completions<'_, C> {
         Completions::new(self)
     }
 
     /// To call [Chat] group related APIs using this client.
-    pub fn chat(&self) -> Chat<C> {
+    pub fn chat(&self) -> Chat<'_, C> {
         Chat::new(self)
     }
 
     /// To call [Images] group related APIs using this client.
-    pub fn images(&self) -> Images<C> {
+    pub fn images(&self) -> Images<'_, C> {
         Images::new(self)
     }
 
     /// To call [Moderations] group related APIs using this client.
-    pub fn moderations(&self) -> Moderations<C> {
+    pub fn moderations(&self) -> Moderations<'_, C> {
         Moderations::new(self)
     }
 
     /// To call [Files] group related APIs using this client.
-    pub fn files(&self) -> Files<C> {
+    pub fn files(&self) -> Files<'_, C> {
         Files::new(self)
     }
 
     /// To call [Uploads] group related APIs using this client.
-    pub fn uploads(&self) -> Uploads<C> {
+    pub fn uploads(&self) -> Uploads<'_, C> {
         Uploads::new(self)
     }
 
     /// To call [FineTuning] group related APIs using this client.
-    pub fn fine_tuning(&self) -> FineTuning<C> {
+    pub fn fine_tuning(&self) -> FineTuning<'_, C> {
         FineTuning::new(self)
     }
 
     /// To call [Embeddings] group related APIs using this client.
-    pub fn embeddings(&self) -> Embeddings<C> {
+    pub fn embeddings(&self) -> Embeddings<'_, C> {
         Embeddings::new(self)
     }
 
     /// To call [Audio] group related APIs using this client.
-    pub fn audio(&self) -> Audio<C> {
+    pub fn audio(&self) -> Audio<'_, C> {
         Audio::new(self)
     }
 
     /// To call [Videos] group related APIs using this client.
-    pub fn videos(&self) -> Videos<C> {
+    pub fn videos(&self) -> Videos<'_, C> {
         Videos::new(self)
     }
 
     /// To call [Assistants] group related APIs using this client.
-    pub fn assistants(&self) -> Assistants<C> {
+    pub fn assistants(&self) -> Assistants<'_, C> {
         Assistants::new(self)
     }
 
     /// To call [Threads] group related APIs using this client.
-    pub fn threads(&self) -> Threads<C> {
+    pub fn threads(&self) -> Threads<'_, C> {
         Threads::new(self)
     }
 
     /// To call [VectorStores] group related APIs using this client.
-    pub fn vector_stores(&self) -> VectorStores<C> {
+    pub fn vector_stores(&self) -> VectorStores<'_, C> {
         VectorStores::new(self)
     }
 
     /// To call [Batches] group related APIs using this client.
-    pub fn batches(&self) -> Batches<C> {
+    pub fn batches(&self) -> Batches<'_, C> {
         Batches::new(self)
     }
 
     /// To call [AuditLogs] group related APIs using this client.
-    pub fn audit_logs(&self) -> AuditLogs<C> {
+    pub fn audit_logs(&self) -> AuditLogs<'_, C> {
         AuditLogs::new(self)
     }
 
     /// To call [Invites] group related APIs using this client.
-    pub fn invites(&self) -> Invites<C> {
+    pub fn invites(&self) -> Invites<'_, C> {
         Invites::new(self)
     }
 
     /// To call [Users] group related APIs using this client.
-    pub fn users(&self) -> Users<C> {
+    pub fn users(&self) -> Users<'_, C> {
         Users::new(self)
     }
 
     /// To call [Projects] group related APIs using this client.
-    pub fn projects(&self) -> Projects<C> {
+    pub fn projects(&self) -> Projects<'_, C> {
         Projects::new(self)
     }
 
     /// To call [Responses] group related APIs using this client.
-    pub fn responses(&self) -> Responses<C> {
+    pub fn responses(&self) -> Responses<'_, C> {
         Responses::new(self)
     }
 
diff --git a/async-openai/src/embedding.rs b/async-openai/src/embedding.rs
index f5759296..a811600a 100644
--- a/async-openai/src/embedding.rs
+++ b/async-openai/src/embedding.rs
@@ -64,7 +64,6 @@ impl<'c, C: Config> Embeddings<'c, C> {
 
 #[cfg(test)]
 mod tests {
-    use crate::error::OpenAIError;
     use crate::types::{CreateEmbeddingResponse, Embedding, EncodingFormat};
     use crate::{types::CreateEmbeddingRequestArgs, Client};
 
diff --git a/async-openai/src/projects.rs b/async-openai/src/projects.rs
index 5b058636..61b4f9e2 100644
--- a/async-openai/src/projects.rs
+++ b/async-openai/src/projects.rs
@@ -20,17 +20,17 @@ impl<'c, C: Config> Projects<'c, C> {
     }
 
     // call [ProjectUsers] group APIs
-    pub fn users(&self, project_id: &str) -> ProjectUsers<C> {
+    pub fn users(&self, project_id: &str) -> ProjectUsers<'_, C> {
         ProjectUsers::new(self.client, project_id)
     }
 
     // call [ProjectServiceAccounts] group APIs
-    pub fn service_accounts(&self, project_id: &str) -> ProjectServiceAccounts<C> {
+    pub fn service_accounts(&self, project_id: &str) -> ProjectServiceAccounts<'_, C> {
         ProjectServiceAccounts::new(self.client, project_id)
     }
 
     // call [ProjectAPIKeys] group APIs
-    pub fn api_keys(&self, project_id: &str) -> ProjectAPIKeys<C> {
+    pub fn api_keys(&self, project_id: &str) -> ProjectAPIKeys<'_, C> {
         ProjectAPIKeys::new(self.client, project_id)
     }
 
diff --git a/async-openai/src/runs.rs b/async-openai/src/runs.rs
index 4d022ec6..d0c5c105 100644
--- a/async-openai/src/runs.rs
+++ b/async-openai/src/runs.rs
@@ -28,7 +28,7 @@ impl<'c, C: Config> Runs<'c, C> {
     }
 
     ///  [Steps] API group
-    pub fn steps(&self, run_id: &str) -> Steps<C> {
+    pub fn steps(&self, run_id: &str) -> Steps<'_, C> {
         Steps::new(self.client, &self.thread_id, run_id)
     }
 
diff --git a/async-openai/src/threads.rs b/async-openai/src/threads.rs
index 8e738a67..f0bba6fe 100644
--- a/async-openai/src/threads.rs
+++ b/async-openai/src/threads.rs
@@ -21,12 +21,12 @@ impl<'c, C: Config> Threads<'c, C> {
     }
 
     /// Call [Messages] group API to manage message in [thread_id] thread.
-    pub fn messages(&self, thread_id: &str) -> Messages<C> {
+    pub fn messages(&self, thread_id: &str) -> Messages<'_, C> {
         Messages::new(self.client, thread_id)
     }
 
     /// Call [Runs] group API to manage runs in [thread_id] thread.
-    pub fn runs(&self, thread_id: &str) -> Runs<C> {
+    pub fn runs(&self, thread_id: &str) -> Runs<'_, C> {
         Runs::new(self.client, thread_id)
     }
 
diff --git a/async-openai/src/vector_stores.rs b/async-openai/src/vector_stores.rs
index 64821cb4..de459e8c 100644
--- a/async-openai/src/vector_stores.rs
+++ b/async-openai/src/vector_stores.rs
@@ -22,12 +22,12 @@ impl<'c, C: Config> VectorStores<'c, C> {
     }
 
     /// [VectorStoreFiles] API group
-    pub fn files(&self, vector_store_id: &str) -> VectorStoreFiles<C> {
+    pub fn files(&self, vector_store_id: &str) -> VectorStoreFiles<'_, C> {
         VectorStoreFiles::new(self.client, vector_store_id)
     }
 
     /// [VectorStoreFileBatches] API group
-    pub fn file_batches(&self, vector_store_id: &str) -> VectorStoreFileBatches<C> {
+    pub fn file_batches(&self, vector_store_id: &str) -> VectorStoreFileBatches<'_, C> {
         VectorStoreFileBatches::new(self.client, vector_store_id)
     }