diff --git a/manifest.toml b/manifest.toml
index 44a9389..c9f7440 100644
--- a/manifest.toml
+++ b/manifest.toml
@@ -44,7 +44,6 @@ ram.runtime = "50M"
         [resources.sources.main]
         url = "https://github.com/audreyt/ethercalc/archive/b196277081d677be991d104e454a52d242ef0189.tar.gz"
         sha256 = "eaf1b7def67ebf1160d93e403a3930381e99a60f4768809bab653d1c9af26936"
-        autoupdate.upstream = "https://github.com/audreyt/ethercalc"
         autoupdate.strategy = "latest_github_commit"
 
     [resources.ports]