diff --git a/package.json b/package.json
index 74252e3..756f8ec 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "handy-thunks",
-  "version": "1.0.0",
+  "version": "1.0.1",
   "description": "Tools for coding with redux-thunk",
   "main": "lib/index.js",
   "module": "es/index.js",
@@ -50,7 +50,7 @@
     "coveralls": "^3.0.2",
     "eslint": "^5.7.0",
     "eslint-plugin-jest": "^21.26.0",
-    "jest": "^23.6.0",
+    "jest": "^24.8.0",
     "redux": "^4.0.1",
     "redux-actions": "^2.6.3",
     "redux-thunk": "^2.3.0"
diff --git a/src/chain.js b/src/chain.js
index cdfba16..661ff0c 100644
--- a/src/chain.js
+++ b/src/chain.js
@@ -1,14 +1,21 @@
 import { compose } from 'redux';
 import { ensureAsync } from './helpers/promises';
 
-const chain = thunks => (...args) => dispatch => {
-  const first = thunks[0];
-  const initial = ensureAsync(compose(dispatch, first));
-
-  return thunks.slice(1).reduce(
-    (promise, thunk) => promise.then(compose(dispatch, thunk)),
-    initial(...args)
-  );
-};
+const chain = (...thunks) => {
+  if (Array.isArray(thunks[0])) {
+    // supporting previous interface of the chain decorator
+    thunks = thunks[0];
+  }
+
+  return (...args) => dispatch => {
+    const first = thunks[0];
+    const initial = ensureAsync(compose(dispatch, first));
+
+    return thunks.slice(1).reduce(
+      (promise, thunk) => promise.then(compose(dispatch, thunk)),
+      initial(...args)
+    );
+  };
+}
 
 export default chain;
\ No newline at end of file
diff --git a/src/loading.js b/src/loading.js
index 165e56a..165cfcc 100644
--- a/src/loading.js
+++ b/src/loading.js
@@ -14,7 +14,8 @@ const loading = (start, end) => (...loadingArgs) => thunk => (
     const promise = asyncThunk(...args);
 
     if (typeof end === 'function') {
-      promise.finally(
+      // Prventing promise leaks by returning new promise
+      return promise.finally(
         () => dispatch(end(...loadingArgs))
       );
     }