diff --git a/Cargo.toml b/Cargo.toml
index 1cadb15..1c5333c 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -2,7 +2,7 @@
 name = "questdb"
 description = "Connector for questdb"
 repository = "https://github.com/solanav/questdb-rs"
-version = "0.1.2"
+version = "0.2.0"
 authors = ["solanav <solanav@qq.com>"]
 edition = "2018"
 license = "MIT"
@@ -12,7 +12,7 @@ categories = ["database"]
 documentation = "https://docs.rs/questdb"
 
 [dependencies]
-serde = { version = "1.0", features = ["derive"] }
-serde_json = "1.0"
-reqwest = { version = "0.10", features = ["json", "blocking"] }
-tokio = { version = "0.2", features = ["macros"] }
\ No newline at end of file
+serde = { version = "1", features = ["derive"] }
+serde_json = "1"
+reqwest = { version = "0.11", features = ["json", "blocking", "multipart"] }
+tokio = { version = "1", features = ["macros", "rt"] }
\ No newline at end of file
diff --git a/src/lib.rs b/src/lib.rs
index 5a7f9fd..b215511 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -12,27 +12,29 @@ pub use api::QuestDB;
 /// Custom error
 pub use error::Error;
 
-use serde::Deserialize;
-
-#[derive(Deserialize, Debug)]
-struct TestData {
-    id: i32,
-    ts: String,
-    temp: f64,
-    sensor_id: i32,
-}
-
 #[cfg(test)]
 mod tests {
     use crate::api::QuestDB;
-    use crate::TestData;
     use crate::types::Atomicity;
+    use serde::Deserialize;
     use std::fs::File;
 
+    #[allow(dead_code)]
+    #[derive(Deserialize, Debug)]
+    struct TestData {
+        id: i32,
+        ts: String,
+        temp: f64,
+        sensor_id: i32,
+    }
+
     #[tokio::test]
     async fn test_exec() {
         let connection = QuestDB::new("http://192.168.1.37:9000");
-        let _res = match connection.exec::<TestData>("select * from readings", Some(5), None, None).await {
+        let _res = match connection
+            .exec::<TestData>("select * from readings", Some(5), None, None)
+            .await
+        {
             Ok(res) => res,
             Err(e) => {
                 println!("{}", e);
@@ -44,13 +46,16 @@ mod tests {
     #[tokio::test]
     async fn test_imp() {
         let connection = QuestDB::new("http://192.168.1.37:9000");
-        let _res = match connection.imp(
-            "./links.csv",
-            "nu_table",
-            Some(false),
-            Some(true),
-            Some(Atomicity::Strict),
-        ).await {
+        let _res = match connection
+            .imp(
+                "./links.csv",
+                "nu_table",
+                Some(false),
+                Some(true),
+                Some(Atomicity::Strict),
+            )
+            .await
+        {
             Ok(res) => res,
             Err(e) => {
                 println!("{}", e);
@@ -64,7 +69,10 @@ mod tests {
         let connection = QuestDB::new("http://192.168.1.37:9000");
 
         let mut output_file = File::create("output.csv").unwrap();
-        let _res = match connection.exp("select * from nu_table", Some(5), &mut output_file).await {
+        let _res = match connection
+            .exp("select * from nu_table", Some(5), &mut output_file)
+            .await
+        {
             Ok(res) => res,
             Err(e) => {
                 println!("{}", e);