diff --git a/README.md b/README.md
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--- a/README.md
+++ b/README.md
@@ -1,3 +1,13 @@
 # version-up-action
 
-Action that check if an updated version is available.
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+This action will try to increase the version number as much as possible while downloading the URL.
+The last number that can be updated will be returned.
+
+[URL - https://git.horstenkamp.eu/Philipp/version-up-action.git](https://git.horstenkamp.eu/Philipp/version-up-action/src/branch/main/README.md)
+
+The folowing arguments should be used:
+
+- `url-pattern`: The pattern of the url to check. Something like: `https://dl.gitea.com/act_runner/{{VERSION}}/act_runner-{{VERSION}}-linux-arm-7`
+  Note that the `{{VERSION}}` marker will be replaced by the incremented version number.
+- `start-version`: The minimum version to be checked. 
+  Example `0.1.1` Please note that the major update will not be updated.