diff --git a/.gitignore b/.gitignore
index 6b7cb8e..c1725f8 100644
--- a/.gitignore
+++ b/.gitignore
@@ -128,6 +128,7 @@ config.min.ini
 mctomqtt.py
 bot_cli.py
 bot_start_time.txt
+*.log.*
 
 # Test files and development artifacts (root level)
 test_*.py
diff --git a/config.ini.example b/config.ini.example
index 48b856a..49d297b 100644
--- a/config.ini.example
+++ b/config.ini.example
@@ -389,6 +389,7 @@ log_level = INFO
 
 # Log file path (leave empty for console only)
 # Bot will write logs to this file in addition to console
+# Logs rotate at 5 MB with up to 3 backup files (e.g. meshcore_bot.log.1, .2, .3)
 log_file = meshcore_bot.log
 
 # Enable colored console output
diff --git a/config.ini.minimal-example b/config.ini.minimal-example
index 638b610..680e237 100644
--- a/config.ini.minimal-example
+++ b/config.ini.minimal-example
@@ -231,6 +231,7 @@ log_level = INFO
 
 # Log file path (leave empty for console only)
 # Bot will write logs to this file in addition to console
+# Logs rotate at 5 MB with up to 3 backup files (e.g. meshcore_bot.log.1, .2, .3)
 log_file = meshcore_bot.log
 
 # Enable colored console output
diff --git a/config.ini.quickstart b/config.ini.quickstart
index 0c29bb3..b95544c 100644
--- a/config.ini.quickstart
+++ b/config.ini.quickstart
@@ -35,6 +35,7 @@ help = "Bot Help: test (or t), ping, help, hello, cmd, advert, wx, aqi, sun, moo
 
 [Logging]
 log_level = INFO
+# Rotates at 5 MB, keeps 3 backups (e.g. meshcore_bot.log.1, .2, .3)
 log_file = meshcore_bot.log
 
 # Weather (for wx command) - set default_state to your region
diff --git a/docs/data-retention.md b/docs/data-retention.md
index 1cb8a05..c38ee61 100644
--- a/docs/data-retention.md
+++ b/docs/data-retention.md
@@ -43,3 +43,5 @@ Shorter retention (e.g. 2–3 days for `packet_stream`) is enough for the web vi
    - Deletes old rows from **mesh_connections** (mesh graph).
 
 So as long as the bot is running, the database is pruned on a schedule regardless of whether you run the standalone web viewer or the stats command.
+
+**Log files** (`[Logging] log_file`, e.g. `meshcore_bot.log`) use rotating file logging: the bot rotates at 5 MB and keeps up to 3 backup files (same policy as the web viewer), so log disk use stays bounded.
diff --git a/modules/core.py b/modules/core.py
index a27b0fd..52b9a30 100644
--- a/modules/core.py
+++ b/modules/core.py
@@ -8,6 +8,7 @@ import asyncio
 import configparser
 import json
 import logging
+from logging.handlers import RotatingFileHandler
 import colorlog
 import time
 import threading
@@ -862,7 +863,12 @@ long_jokes = false
             
             if log_file:
                 try:
-                    file_handler = logging.FileHandler(log_file)
+                    file_handler = RotatingFileHandler(
+                        log_file,
+                        maxBytes=5 * 1024 * 1024,
+                        backupCount=3,
+                        encoding='utf-8',
+                    )
                     file_handler.setFormatter(formatter)
                     self.logger.addHandler(file_handler)
                 except (OSError, PermissionError) as e: