diff --git a/src/api/ApiRouter.cpp b/src/api/ApiRouter.cpp
index 69fa1594..bdedac4d 100644
--- a/src/api/ApiRouter.cpp
+++ b/src/api/ApiRouter.cpp
@@ -293,13 +293,16 @@ void ApiRouter::getThreads(rapidjson::Document &doc) const
     const std::vector<xmrig::IThread *> &threads = m_controller->config()->threads();
     rapidjson::Value list(rapidjson::kArrayType);
 
+    size_t i = 0;
     for (const xmrig::IThread *thread : threads) {
         rapidjson::Value value = thread->toAPI(doc);
 
         rapidjson::Value hashrate(rapidjson::kArrayType);
-        hashrate.PushBack(normalize(hr->calc(thread->index(), Hashrate::ShortInterval)),  allocator);
-        hashrate.PushBack(normalize(hr->calc(thread->index(), Hashrate::MediumInterval)), allocator);
-        hashrate.PushBack(normalize(hr->calc(thread->index(), Hashrate::LargeInterval)),  allocator);
+        hashrate.PushBack(normalize(hr->calc(i, Hashrate::ShortInterval)),  allocator);
+        hashrate.PushBack(normalize(hr->calc(i, Hashrate::MediumInterval)), allocator);
+        hashrate.PushBack(normalize(hr->calc(i, Hashrate::LargeInterval)),  allocator);
+
+        i++;
 
         value.AddMember("hashrate", hashrate, allocator);
         list.PushBack(value, allocator);
diff --git a/src/version.h b/src/version.h
index 0ad8edaa..36185bf6 100644
--- a/src/version.h
+++ b/src/version.h
@@ -28,7 +28,7 @@
 #define APP_ID        "xmrig"
 #define APP_NAME      "XMRig"
 #define APP_DESC      "XMRig CPU miner"
-#define APP_VERSION   "2.13.0-dev"
+#define APP_VERSION   "2.13.0"
 #define APP_DOMAIN    "xmrig.com"
 #define APP_SITE      "www.xmrig.com"
 #define APP_COPYRIGHT "Copyright (C) 2016-2019 xmrig.com"