diff --git a/src/ghcup/packages.rs b/src/ghcup/packages.rs
index 1ec68f7..c1b2480 100644
--- a/src/ghcup/packages.rs
+++ b/src/ghcup/packages.rs
@@ -34,6 +34,7 @@ impl SnapshotStorage<SnapshotMeta> for GhcupPackages {
         let latest_yaml_obj = filter_map_file_objs(
             list_files(&client, repo_config, &self.ghcup_repo_config.branch).await?,
         )
+        .filter(|obj| !obj.is_sig)
         .max_by(|x, y| x.version.cmp(&y.version))
         .ok_or_else(|| Error::ProcessError(String::from("no config file found")))?;
 
diff --git a/src/ghcup/parser.rs b/src/ghcup/parser.rs
index 9055862..663a781 100644
--- a/src/ghcup/parser.rs
+++ b/src/ghcup/parser.rs
@@ -4,7 +4,7 @@ use serde::Deserialize;
 
 use super::utils::Version;
 
-pub const EXPECTED_CONFIG_VERSION: Version = Version::new(0, 0, 7);
+pub const EXPECTED_CONFIG_VERSION: Version = Version::new(0, 0, 8);
 
 #[derive(Debug, Deserialize)]
 #[serde(rename_all = "camelCase")]
diff --git a/src/ghcup/utils.rs b/src/ghcup/utils.rs
index 20023d1..e070d42 100644
--- a/src/ghcup/utils.rs
+++ b/src/ghcup/utils.rs
@@ -13,7 +13,7 @@ use super::GhcupRepoConfig;
 
 lazy_static! {
     static ref YAML_CONFIG_PATTERN: regex::Regex =
-        regex::Regex::new(r"ghcup-(?P<ver>\d.\d.\d).yaml$").unwrap();
+        regex::Regex::new(r"ghcup-(?P<ver>\d.\d.\d).yaml(?P<sig>.sig)?$").unwrap();
 }
 
 // order is reverted to derive Ord ;)
@@ -81,6 +81,7 @@ enum NodeType {
 pub struct ObjectInfo {
     pub name: String,
     pub path: String,
+    pub is_sig: bool,
     pub version: Version,
 }
 
@@ -88,6 +89,7 @@ pub struct ObjectInfo {
 pub struct ObjectInfoWithUrl {
     pub name: String,
     pub path: String,
+    pub is_sig: bool,
     pub version: Version,
     pub url: String,
 }
@@ -124,6 +126,7 @@ pub fn filter_map_file_objs(
                 let name = f.path.split('/').last().unwrap().to_string();
                 Some(ObjectInfo {
                     name,
+                    is_sig: c.name("sig").is_some(),
                     path: f.path.clone(),
                     version: Version::from_str(m.as_str()).ok()?,
                 })
@@ -137,6 +140,7 @@ pub async fn get_raw_blob_url(
     config: &GhcupRepoConfig,
     object: ObjectInfo,
 ) -> Result<ObjectInfoWithUrl> {
+    println!("decoding https://api.github.com/repos/{}/contents/{}", config.repo, object.path);
     let content: ContentMeta = client
         .get(format!(
             "https://api.github.com/repos/{}/contents/{}",
@@ -150,6 +154,7 @@ pub async fn get_raw_blob_url(
         name: object.name,
         path: object.path,
         version: object.version,
+        is_sig: object.is_sig,
         url: content.download_url,
     })
 }