diff --git a/crates/binstalk-git-repo-api/src/gh_api_client.rs b/crates/binstalk-git-repo-api/src/gh_api_client.rs
index b2e3d6a3..5b6420cf 100644
--- a/crates/binstalk-git-repo-api/src/gh_api_client.rs
+++ b/crates/binstalk-git-repo-api/src/gh_api_client.rs
@@ -204,8 +204,8 @@ impl GhApiClient {
     where
         GraphQLFn: Fn(&remote::Client, &T, &str) -> GraphQLFut,
         RestfulFn: Fn(&remote::Client, &T, Option<&str>) -> RestfulFut,
-        GraphQLFut: Future<Output = Result<U, GhApiError>> + Send + Sync + 'static,
-        RestfulFut: Future<Output = Result<U, GhApiError>> + Send + Sync + 'static,
+        GraphQLFut: Future<Output = Result<U, GhApiError>> + Send + 'static,
+        RestfulFut: Future<Output = Result<U, GhApiError>> + Send + 'static,
     {
         self.check_retry_after()?;
 
diff --git a/crates/binstalk-git-repo-api/src/gh_api_client/common.rs b/crates/binstalk-git-repo-api/src/gh_api_client/common.rs
index 35048e58..723834ec 100644
--- a/crates/binstalk-git-repo-api/src/gh_api_client/common.rs
+++ b/crates/binstalk-git-repo-api/src/gh_api_client/common.rs
@@ -39,7 +39,7 @@ pub(super) fn issue_restful_api<T>(
     client: &remote::Client,
     path: &[&str],
     auth_token: Option<&str>,
-) -> impl Future<Output = Result<T, GhApiError>> + Send + Sync + 'static
+) -> impl Future<Output = Result<T, GhApiError>> + Send + 'static
 where
     T: DeserializeOwned,
 {
@@ -95,7 +95,7 @@ pub(super) fn issue_graphql_query<T>(
     client: &remote::Client,
     query: String,
     auth_token: &str,
-) -> impl Future<Output = Result<T, GhApiError>> + Send + Sync + 'static
+) -> impl Future<Output = Result<T, GhApiError>> + Send + 'static
 where
     T: DeserializeOwned + Debug,
 {
diff --git a/crates/binstalk-git-repo-api/src/gh_api_client/release_artifacts.rs b/crates/binstalk-git-repo-api/src/gh_api_client/release_artifacts.rs
index d11e2401..5b738842 100644
--- a/crates/binstalk-git-repo-api/src/gh_api_client/release_artifacts.rs
+++ b/crates/binstalk-git-repo-api/src/gh_api_client/release_artifacts.rs
@@ -74,7 +74,7 @@ pub(super) fn fetch_release_artifacts_restful_api(
         tag,
     }: &GhRelease,
     auth_token: Option<&str>,
-) -> impl Future<Output = Result<Artifacts, GhApiError>> + Send + Sync + 'static {
+) -> impl Future<Output = Result<Artifacts, GhApiError>> + Send + 'static {
     issue_restful_api(
         client,
         &["repos", owner, repo, "releases", "tags", tag],
@@ -135,7 +135,7 @@ pub(super) fn fetch_release_artifacts_graphql_api(
         tag,
     }: &GhRelease,
     auth_token: &str,
-) -> impl Future<Output = Result<Artifacts, GhApiError>> + Send + Sync + 'static {
+) -> impl Future<Output = Result<Artifacts, GhApiError>> + Send + 'static {
     let client = client.clone();
     let auth_token = auth_token.to_compact_string();
 
diff --git a/crates/binstalk-git-repo-api/src/gh_api_client/repo_info.rs b/crates/binstalk-git-repo-api/src/gh_api_client/repo_info.rs
index ac5c08cc..d95cca81 100644
--- a/crates/binstalk-git-repo-api/src/gh_api_client/repo_info.rs
+++ b/crates/binstalk-git-repo-api/src/gh_api_client/repo_info.rs
@@ -55,7 +55,7 @@ pub(super) fn fetch_repo_info_restful_api(
     client: &remote::Client,
     GhRepo { owner, repo }: &GhRepo,
     auth_token: Option<&str>,
-) -> impl Future<Output = Result<Option<RepoInfo>, GhApiError>> + Send + Sync + 'static {
+) -> impl Future<Output = Result<Option<RepoInfo>, GhApiError>> + Send + 'static {
     issue_restful_api(client, &["repos", owner, repo], auth_token)
 }
 
@@ -68,7 +68,7 @@ pub(super) fn fetch_repo_info_graphql_api(
     client: &remote::Client,
     GhRepo { owner, repo }: &GhRepo,
     auth_token: &str,
-) -> impl Future<Output = Result<Option<RepoInfo>, GhApiError>> + Send + Sync + 'static {
+) -> impl Future<Output = Result<Option<RepoInfo>, GhApiError>> + Send + 'static {
     let query = format!(
         r#"
 query {{