diff --git a/src/test/client_try_tls_while_there_is_no_tls.rs b/src/test/client_try_tls_while_there_is_no_tls.rs
index c4e7b60..881fd45 100644
--- a/src/test/client_try_tls_while_there_is_no_tls.rs
+++ b/src/test/client_try_tls_while_there_is_no_tls.rs
@@ -11,7 +11,7 @@ fn port(index: u16) -> u16 {
     get_port_number(PortsAllocation::ClientTryTLSWhileThereIsNoTLS, index)
 }
 
-#[tokio::test(flavor = "multi_thread", worker_threads = 5)]
+#[tokio::test()]
 async fn test() {
     let _ = env_logger::builder().is_test(true).try_init();
 
diff --git a/src/test/invalid_token_file.rs b/src/test/invalid_token_file.rs
index de5846f..6595d3d 100644
--- a/src/test/invalid_token_file.rs
+++ b/src/test/invalid_token_file.rs
@@ -7,7 +7,7 @@ fn port(index: u16) -> u16 {
     get_port_number(PortsAllocation::TestsWithoutPortOpened, index)
 }
 
-#[tokio::test(flavor = "multi_thread", worker_threads = 5)]
+#[tokio::test()]
 async fn test() {
     let _ = env_logger::builder().is_test(true).try_init();
 
diff --git a/src/test/invalid_with_token_auth.rs b/src/test/invalid_with_token_auth.rs
index 3b87aa0..c1d7792 100644
--- a/src/test/invalid_with_token_auth.rs
+++ b/src/test/invalid_with_token_auth.rs
@@ -12,7 +12,7 @@ fn port(index: u16) -> u16 {
     get_port_number(PortsAllocation::InvalidWithTokenAuth, index)
 }
 
-#[tokio::test(flavor = "multi_thread", worker_threads = 5)]
+#[tokio::test()]
 async fn invalid_with_token_auth() {
     let _ = env_logger::builder().is_test(true).try_init();
 
diff --git a/src/test/server_invalid_tls_config_missing_key.rs b/src/test/server_invalid_tls_config_missing_key.rs
index 709a3d0..b03660a 100644
--- a/src/test/server_invalid_tls_config_missing_key.rs
+++ b/src/test/server_invalid_tls_config_missing_key.rs
@@ -8,7 +8,7 @@ fn port(index: u16) -> u16 {
     get_port_number(PortsAllocation::TestsWithoutPortOpened, index)
 }
 
-#[tokio::test(flavor = "multi_thread")]
+#[tokio::test()]
 async fn test() {
     let _ = env_logger::builder().is_test(true).try_init();
 
diff --git a/src/test/valid_token_with_custom_increment.rs b/src/test/valid_token_with_custom_increment.rs
index eb27755..dcfa49c 100644
--- a/src/test/valid_token_with_custom_increment.rs
+++ b/src/test/valid_token_with_custom_increment.rs
@@ -13,7 +13,7 @@ fn port(index: u16) -> u16 {
     get_port_number(PortsAllocation::ValidTokenWithCustomIncrement, index)
 }
 
-#[tokio::test(flavor = "multi_thread")]
+#[tokio::test()]
 async fn test() {
     let _ = env_logger::builder().is_test(true).try_init();
 
diff --git a/src/test/valid_with_multiple_token_auth.rs b/src/test/valid_with_multiple_token_auth.rs
index a5cf9ae..325ed1a 100644
--- a/src/test/valid_with_multiple_token_auth.rs
+++ b/src/test/valid_with_multiple_token_auth.rs
@@ -13,7 +13,7 @@ fn port(index: u16) -> u16 {
     get_port_number(PortsAllocation::ValidWithTokenFile, index)
 }
 
-#[tokio::test(flavor = "multi_thread", worker_threads = 5)]
+#[tokio::test()]
 async fn valid_with_multiple_token_auth() {
     let _ = env_logger::builder().is_test(true).try_init();
 
diff --git a/src/test/valid_with_token_auth.rs b/src/test/valid_with_token_auth.rs
index db33b56..4d155af 100644
--- a/src/test/valid_with_token_auth.rs
+++ b/src/test/valid_with_token_auth.rs
@@ -13,7 +13,7 @@ fn port(index: u16) -> u16 {
     get_port_number(PortsAllocation::ValidWithTokenAuth, index)
 }
 
-#[tokio::test(flavor = "multi_thread", worker_threads = 5)]
+#[tokio::test()]
 async fn valid_with_token_auth() {
     let _ = env_logger::builder().is_test(true).try_init();
 
diff --git a/src/test/valid_with_token_auth_and_server_tls.rs b/src/test/valid_with_token_auth_and_server_tls.rs
index 4f67a53..235aaec 100644
--- a/src/test/valid_with_token_auth_and_server_tls.rs
+++ b/src/test/valid_with_token_auth_and_server_tls.rs
@@ -14,7 +14,7 @@ fn port(index: u16) -> u16 {
     get_port_number(PortsAllocation::ValidWithTokenAuthAndServerTLS, index)
 }
 
-#[tokio::test(flavor = "multi_thread", worker_threads = 5)]
+#[tokio::test()]
 async fn test() {
     let _ = env_logger::builder().is_test(true).try_init();
 
diff --git a/src/test/valid_with_token_auth_multiple_ports.rs b/src/test/valid_with_token_auth_multiple_ports.rs
index e79e6be..c7f565e 100644
--- a/src/test/valid_with_token_auth_multiple_ports.rs
+++ b/src/test/valid_with_token_auth_multiple_ports.rs
@@ -15,7 +15,7 @@ fn port(index: u16) -> u16 {
     get_port_number(PortsAllocation::ValidWithTokenAuthMultiplePorts, index)
 }
 
-#[tokio::test(flavor = "multi_thread", worker_threads = 5)]
+#[tokio::test()]
 async fn test() {
     let _ = env_logger::builder().is_test(true).try_init();
 
diff --git a/src/test/valid_with_token_file.rs b/src/test/valid_with_token_file.rs
index 09bb6af..139698d 100644
--- a/src/test/valid_with_token_file.rs
+++ b/src/test/valid_with_token_file.rs
@@ -13,7 +13,7 @@ fn port(index: u16) -> u16 {
     get_port_number(PortsAllocation::ValidWithMultipleTokenAuth, index)
 }
 
-#[tokio::test(flavor = "multi_thread", worker_threads = 5)]
+#[tokio::test()]
 async fn valid_with_token_file() {
     let _ = env_logger::builder().is_test(true).try_init();
 
diff --git a/src/test/with_token_auth_and_invalid_server_tls_bad_ca.rs b/src/test/with_token_auth_and_invalid_server_tls_bad_ca.rs
index 8e3a3cd..4fd6fe4 100644
--- a/src/test/with_token_auth_and_invalid_server_tls_bad_ca.rs
+++ b/src/test/with_token_auth_and_invalid_server_tls_bad_ca.rs
@@ -15,7 +15,7 @@ fn port(index: u16) -> u16 {
     )
 }
 
-#[tokio::test(flavor = "multi_thread", worker_threads = 5)]
+#[tokio::test()]
 async fn test() {
     let _ = env_logger::builder().is_test(true).try_init();
 
diff --git a/src/test/with_token_auth_and_invalid_server_tls_expired_and_bad_cn.rs b/src/test/with_token_auth_and_invalid_server_tls_expired_and_bad_cn.rs
index 2ed2a91..c353123 100644
--- a/src/test/with_token_auth_and_invalid_server_tls_expired_and_bad_cn.rs
+++ b/src/test/with_token_auth_and_invalid_server_tls_expired_and_bad_cn.rs
@@ -15,7 +15,7 @@ fn port(index: u16) -> u16 {
     )
 }
 
-#[tokio::test(flavor = "multi_thread", worker_threads = 5)]
+#[tokio::test()]
 async fn test() {
     let _ = env_logger::builder().is_test(true).try_init();