diff --git a/backend/crates/infrastructure/src/registry.rs b/backend/crates/infrastructure/src/registry.rs
index daa2744..4b8df39 100644
--- a/backend/crates/infrastructure/src/registry.rs
+++ b/backend/crates/infrastructure/src/registry.rs
@@ -152,14 +152,7 @@ impl ImageRegistry for CurlImageRegistry {
                     DomainError::Unavailable(format!("{host}: authentication required"))
                 })?;
                 let (_, _, token_body) = self.get(&challenge, None).await?;
-                #[derive(serde::Deserialize)]
-                struct Token {
-                    #[serde(alias = "access_token")]
-                    token: Option<String>,
-                }
-                token = serde_json::from_str::<Token>(&token_body)
-                    .ok()
-                    .and_then(|t| t.token);
+                token = parse_token(&token_body);
                 if token.is_none() {
                     return Err(DomainError::Unavailable(format!(
                         "{host}: no token in the auth response"