diff --git a/adafruit_logging/__init__.py b/adafruit_logging/__init__.py
index 33f8acf..f5bcdf4 100644
--- a/adafruit_logging/__init__.py
+++ b/adafruit_logging/__init__.py
@@ -111,7 +111,9 @@ def format(self, log_level: int, message: str) -> str:
         :param str message: the message to log
 
         """
-        return "{0}: {1} - {2}".format(time.monotonic(), level_for(log_level), message)
+        return "{0:<0.3f}: {1} - {2}".format(
+            time.monotonic(), level_for(log_level), message
+        )
 
     def emit(self, log_level: int, message: str):
         """Send a message where it should go.