diff --git a/lisa/tools/reboot.py b/lisa/tools/reboot.py
index c067ad0743..80f52c703e 100644
--- a/lisa/tools/reboot.py
+++ b/lisa/tools/reboot.py
@@ -113,6 +113,9 @@ def reboot(self, time_out: int = 300) -> None:
             # it doesn't matter to exceptions here. The system may reboot fast
             self._log.debug(f"ignorable exception on rebooting: {identifier}")
 
+        self._log.debug("start sleep")
+        time.sleep(300)
+
         connected: bool = False
         # The previous steps may take longer time than time out. After that, it
         # needs to connect at least once.
diff --git a/lisa/tools/who.py b/lisa/tools/who.py
index cf6080c4fb..a457db8d49 100644
--- a/lisa/tools/who.py
+++ b/lisa/tools/who.py
@@ -27,7 +27,7 @@ def last_boot(self, no_error_log: bool = True) -> datetime:
             "-b",
             force_run=True,
             no_error_log=no_error_log,
-            timeout=20,
+            timeout=60,
         )
         command_result.assert_exit_code(
             0, f"'last' return non-zero exit code: {command_result.stderr}"