2 files changed, 2 insertions, 2 deletions
diff --git a/packages/subproviders/test/chai_setup.ts b/packages/subproviders/test/chai_setup.ts
index a281bab6c..6c24dc222 100644
--- a/packages/subproviders/test/chai_setup.ts
+++ b/packages/subproviders/test/chai_setup.ts
@@ -3,7 +3,7 @@ import chaiAsPromised = require('chai-as-promised');
 import * as dirtyChai from 'dirty-chai';
 
 export const chaiSetup = {
-    configure() {
+    configure(): void {
         chai.config.includeStack = true;
         chai.use(dirtyChai);
         chai.use(chaiAsPromised);
diff --git a/packages/subproviders/test/unit/nonce_tracker_subprovider_test.ts b/packages/subproviders/test/unit/nonce_tracker_subprovider_test.ts
index 14176c145..1a3db7672 100644
--- a/packages/subproviders/test/unit/nonce_tracker_subprovider_test.ts
+++ b/packages/subproviders/test/unit/nonce_tracker_subprovider_test.ts
@@ -39,7 +39,7 @@ describe('NonceTrackerSubprovider', () => {
         '0x5e1d3a76fbf824220eafc8c79ad578ad2b67d01b0c2425eb1f1347e8f50882ab',
         '0x5bd428537f05f9830e93792f90ea6a3e2d1ee84952dd96edbae9f658f831ab13',
     ];
-    function createFixtureSubprovider() {
+    function createFixtureSubprovider(): FixtureSubprovider {
         let isFirstGetTransactionCount = true;
         const fixedBlockNumberAndTransactionCountProvider = new FixtureSubprovider({
             eth_getBlockByNumber: '0x01',