Add missing return types

1 files changed, 2 insertions, 2 deletions

diff --git a/test/utils/blockchain_clean.ts b/test/utils/blockchain_clean.ts
index 6468dbec7..18b7e3a5b 100644
--- a/test/utils/blockchain_clean.ts
+++ b/test/utils/blockchain_clean.ts
@@ -7,10 +7,10 @@ export class BlockchainClean {
         this.rpc = new RPC();
     }
     // TODO: Check if running on TestRPC or on actual node, if actual node, re-deploy contracts instead
-    public async setupAsync() {
+    public async setupAsync(): Promise<void> {
         this.snapshotId = await this.rpc.takeSnapshotAsync();
     }
-    public async restoreAsync() {
+    public async restoreAsync(): Promise<void> {
         const didRevert = await this.rpc.revertSnapshotAsync(this.snapshotId);
         if (!didRevert) {
             throw new Error(`Snapshot with id #${this.snapshotId} failed to revert`);