diff --git a/juniper/src/types/containers.rs b/juniper/src/types/containers.rs
index b2355742..e8b6d6e0 100644
--- a/juniper/src/types/containers.rs
+++ b/juniper/src/types/containers.rs
@@ -1,4 +1,5 @@
 use std::{
+    collections::HashSet,
     mem::{self, MaybeUninit},
     ptr,
 };
@@ -220,7 +221,7 @@ where
     }
 }
 
-impl<S, T> GraphQLType<S> for std::collections::HashSet<T>
+impl<S, T> GraphQLType<S> for HashSet<T>
 where
     T: GraphQLType<S>,
     S: ScalarValue,
@@ -237,7 +238,7 @@ where
     }
 }
 
-impl<S, T> GraphQLValue<S> for std::collections::HashSet<T>
+impl<S, T> GraphQLValue<S> for HashSet<T>
 where
     T: GraphQLValue<S>,
     S: ScalarValue,
@@ -259,6 +260,24 @@ where
     }
 }
 
+impl<S, T> GraphQLValueAsync<S> for HashSet<T>
+where
+    T: GraphQLValueAsync<S>,
+    T::TypeInfo: Sync,
+    T::Context: Sync,
+    S: ScalarValue + Send + Sync,
+{
+    fn resolve_async<'a>(
+        &'a self,
+        info: &'a Self::TypeInfo,
+        _: Option<&'a [Selection<S>]>,
+        executor: &'a Executor<Self::Context, S>,
+    ) -> crate::BoxFuture<'a, ExecutionResult<S>> {
+        let f = resolve_into_list_async(executor, info, self.iter());
+        Box::pin(f)
+    }
+}
+
 impl<S, T> GraphQLType<S> for [T]
 where
     S: ScalarValue,