diff --git a/README.md b/README.md
index 1f8350e..bbaa83f 100644
--- a/README.md
+++ b/README.md
@@ -1,3 +1,5 @@
+<!-- SPDX-License-Identifier: MIT -->
+
 ## matchmaking-bot
 
 Fork of https://git.sr.ht/~gavodavo/matchmaking-bot to add support for multiple games.
diff --git a/bot.ini.example b/bot.ini.example
index 0233406..f4d0402 100644
--- a/bot.ini.example
+++ b/bot.ini.example
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: MIT
 [host]
 server = chat.freenode.invalid
 nickname = matchmaking-bot
diff --git a/bot.py b/bot.py
index b8a3abd..6b92de5 100755
--- a/bot.py
+++ b/bot.py
@@ -1,4 +1,5 @@
 #!/bin/env python3
+# SPDX-License-Identifier: MIT
 import asyncio, configparser
 from irctokens import build, Line
 from ircrobots import Bot as BaseBot