diff --git a/src/main/java/net/lamgc/oracle/sentry/ComputeInstanceManager.java b/src/main/java/net/lamgc/oracle/sentry/ComputeInstanceManager.java
index 7ced275..1cf268a 100644
--- a/src/main/java/net/lamgc/oracle/sentry/ComputeInstanceManager.java
+++ b/src/main/java/net/lamgc/oracle/sentry/ComputeInstanceManager.java
@@ -11,8 +11,6 @@
 import com.oracle.bmc.identity.responses.ListCompartmentsResponse;
 import net.lamgc.oracle.sentry.oci.compute.ComputeInstance;
 import net.lamgc.oracle.sentry.oci.compute.ssh.SshAuthIdentityProvider;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
 
 import java.io.File;
 import java.io.IOException;
@@ -26,8 +24,6 @@
  */
 public class ComputeInstanceManager {
 
-    private final static Logger log = LoggerFactory.getLogger(ComputeInstanceManager.class);
-
     private final Map<String, ComputeInstance> instanceMap = new ConcurrentHashMap<>();
     private SshAuthIdentityProvider sshIdentityProvider;