diff --git a/pioreactor/cli/pio.py b/pioreactor/cli/pio.py
index 7c512ea4..d6c81cc2 100644
--- a/pioreactor/cli/pio.py
+++ b/pioreactor/cli/pio.py
@@ -140,7 +140,12 @@ def log(message: str, level: str, name: str, local_only: bool):
             to_mqtt=not local_only,
         )
         getattr(logger, level)(message)
-        sleep(0.5)  # wait to make sure msg gets to mqtt
+
+        # flush and close handlers
+        for handler in logger.handlers:
+            handler.flush()
+            handler.close()
+
     except Exception:
         # don't let a logging error bring down a script...
         pass
diff --git a/requirements/requirements.txt b/requirements/requirements.txt
index 39e39b75..bb0fe39b 100644
--- a/requirements/requirements.txt
+++ b/requirements/requirements.txt
@@ -1,4 +1,4 @@
-click==8.1.3
+click==8.1.6
 paho-mqtt==1.6.1
 psutil==5.9.5
 sh==1.14.2
diff --git a/setup.py b/setup.py
index 05a42f12..06b6c24f 100644
--- a/setup.py
+++ b/setup.py
@@ -8,7 +8,7 @@
 
 
 CORE_REQUIREMENTS = [
-    "click==8.1.3",
+    "click==8.1.6",
     "paho-mqtt==1.6.1",
     "psutil==5.9.5",
     "sh==1.14.3",