diff --git a/Makefile b/Makefile
index 3c64f93354..96e9f0d4fd 100644
--- a/Makefile
+++ b/Makefile
@@ -72,3 +72,7 @@ screencast: ## Create a screencast for the docs
 verify: ## Verify the MSRV
 	cargo msrv --path lychee-lib verify
 	cargo msrv --path lychee-bin verify
+
+.PHONY: readme
+readme: ## Updates README.md with `lychee --help`
+	scripts/update_readme.py
diff --git a/README.md b/README.md
index 3b8610adb2..57135a3b13 100644
--- a/README.md
+++ b/README.md
@@ -701,7 +701,7 @@ Options:
   -u, --user-agent <USER_AGENT>
           User agent
 
-          [default: lychee/0.20.1]
+          [default: lychee/x.y.z]
 
   -v, --verbose...
           Set verbosity level; more output per occurrence (e.g. `-v` or `-vv`)
diff --git a/scripts/update_readme.py b/scripts/update_readme.py
new file mode 100755
index 0000000000..d581216b7e
--- /dev/null
+++ b/scripts/update_readme.py
@@ -0,0 +1,30 @@
+#!/usr/bin/env python3
+
+"""
+Simply updates the `lychee --help` output in the README.
+"""
+
+import subprocess
+
+def main():
+    new_help = subprocess.check_output('cargo run -- --help'.split(), encoding='utf-8')
+    version = subprocess.check_output('cargo run -- --version'.split(), encoding='utf-8').split()[-1]
+
+    lines = new_help.strip().splitlines()
+    new_help = '\n'.join(line.rstrip() for line in lines)
+    new_help = new_help.replace(f'lychee/{version}', 'lychee/x.y.z')
+
+    begin = '\n```help-message\n'
+    end = '\n```\n'
+
+    with open('README.md', 'r') as f:
+        text = f.read()
+        before, rest = text.split(begin, 1)
+        _, after = rest.split(end, 1)
+
+    with open('README.md', 'w') as f:
+        for part in [before, begin, new_help, end, after]:
+            f.write(part)
+
+if __name__ == "__main__":
+    main()