diff --git a/README.md b/README.md
index 16bb6b9..a92e9af 100644
--- a/README.md
+++ b/README.md
@@ -31,6 +31,9 @@ located in the repo root.
 : `target-dir`
 The target directory that should be cleaned and persisted, defaults to `./target`.
 
+: `cache-on-failure`
+Cache even if the build fails, defaults to false
+
 ## Outputs
 
 : `cache-hit`