diff --git a/rosbridge_library/src/rosbridge_library/internal/services.py b/rosbridge_library/src/rosbridge_library/internal/services.py
index 2987a2e8..220fec6e 100644
--- a/rosbridge_library/src/rosbridge_library/internal/services.py
+++ b/rosbridge_library/src/rosbridge_library/internal/services.py
@@ -30,11 +30,9 @@
 # ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 # POSSIBILITY OF SUCH DAMAGE.
 
-import time
 from threading import Thread, Condition
 from typing import Any, Callable, Optional
 
-import rclpy
 from rclpy.callback_groups import ReentrantCallbackGroup
 from rclpy.expand_topic_name import expand_topic_name
 from rclpy.node import Node