diff --git a/src/source/pesde/mod.rs b/src/source/pesde/mod.rs
index 7895521..45816ae 100644
--- a/src/source/pesde/mod.rs
+++ b/src/source/pesde/mod.rs
@@ -295,7 +295,6 @@ impl AllowedRegistries {
 
 /// The configuration for the pesde index
 #[derive(Deserialize, Debug, Clone)]
-#[serde(deny_unknown_fields)]
 pub struct IndexConfig {
     /// The URL of the API
     pub api: url::Url,