diff --git a/lib/db.js b/lib/db.js
index 674fbf0..6387f20 100644
--- a/lib/db.js
+++ b/lib/db.js
@@ -36,7 +36,13 @@ class LimitDBRedis extends EventEmitter {
       enableOfflineQueue: false,
       keyPrefix: config.prefix,
       password: config.password,
-      tls: config.tls
+      tls: config.tls,
+      reconnectOnError: (err) => {
+        // will force a reconnect when error starts with `READONLY`
+        // this code is only triggered when auto-failover is disabled
+        // more: https://github.com/luin/ioredis#reconnect-on-error
+        return err.message.includes('READONLY');
+      },
     };
 
     const clusterOptions = {
@@ -325,7 +331,7 @@ class LimitDBRedis extends EventEmitter {
     }, callback);
   }
 
-  _determineCount({paramsCount, defaultCount, bucketKeyConfigSize}) {
+  _determineCount({ paramsCount, defaultCount, bucketKeyConfigSize }) {
     if (paramsCount === 'all') {
       return bucketKeyConfigSize;
     }
diff --git a/package.json b/package.json
index e40fe3a..e23ff93 100644
--- a/package.json
+++ b/package.json
@@ -15,7 +15,7 @@
   "dependencies": {
     "async": "^2.6.1",
     "disyuntor": "^3.5.0",
-    "ioredis": "^4.5.1",
+    "ioredis": "^4.28.5",
     "lodash": "^4.17.15",
     "lru-cache": "^4.1.5",
     "ms": "^2.1.2",