diff --git a/action.yml b/action.yml
index 338da15..a7ff309 100644
--- a/action.yml
+++ b/action.yml
@@ -23,7 +23,7 @@ inputs:
   version:
     description: 'Tailscale version to use. Specify `latest` to use the latest stable version.'
     required: true
-    default: '1.72.1'
+    default: '1.78.1'
   sha256sum:
     description: 'Expected SHA256 checksum of the tarball.'
     required: false