diff --git a/pingparsing/cli.py b/pingparsing/cli.py
index <HASH>..<HASH> 100644
--- a/pingparsing/cli.py
+++ b/pingparsing/cli.py
@@ -22,7 +22,9 @@ QUIET_LOG_LEVEL = logbook.NOTSET
 
 
 def parse_option():
-    parser = argparse.ArgumentParser()
+    parser = argparse.ArgumentParser(
+        epilog="Issue tracker: https://github.com/thombashi/pingparsing/issues")
+
     if is_use_stdin():
         parser.add_argument(
             "destination_or_file", nargs="+",
Add issue tracker description to pingparsing command