diff --git a/README.md b/README.md
index 072c876..f59f9cc 100644
--- a/README.md
+++ b/README.md
@@ -384,4 +384,8 @@ python cloc.py
 python check_alarm.py
 python check_correct.py
 python check_time.py
-```
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+```
+
+## Contact
+
+If you have any questions, please contact us at [wonseok_oh@korea.ac.kr](mailto:wonseok_oh@korea.ac.kr)
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