diff --git a/README.md b/README.md
index 3619510..2d46577 100644
--- a/README.md
+++ b/README.md
@@ -242,5 +242,5 @@ I 💖 Unicode!
 
 ---
 
-Demicode is © 2023 [Robert Grimm](https://apparebit.com) and has been released
-under the Apache 2.0 license.
+Demicode is © 2023–2024 [Robert Grimm](https://apparebit.com) and has been
+released under the Apache 2.0 license.
diff --git a/demicode/tool.py b/demicode/tool.py
index 1fc9d34..d3f38be 100644
--- a/demicode/tool.py
+++ b/demicode/tool.py
@@ -131,9 +131,9 @@ def configure_parser() -> argparse.ArgumentParser:
             prefixed with E, the Unicode Emoji version that first defined a
             sequence.
 
-            Demicode requires {b("Python 3.11 or later")} and a terminal that supports
-            {b("ANSI escape codes")} including 256 colors. Demicode is © 2023 Robert
-            Grimm, licensed as open source under Apache 2.0.
+            Demicode requires {b("Python 3.11 or later")} and a terminal that
+            supports {b("ANSI escape codes")} including 256 colors. Demicode is
+            © 2023-2024 Robert Grimm, licensed as open source under Apache 2.0.
 
                       <{a("https://github.com/apparebit/demicode")}>
              ​