diff --git a/CHANGELOG.md b/CHANGELOG.md
index 5d4ed0e3f..a96a3ae6c 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,7 @@
 # v5.3.0
 - [#1414](https://github.com/xmrig/xmrig/pull/1414) Added native MSR support for Windows, by using signed **WinRing0 driver** (© 2007-2009 OpenLibSys.org).
 - Added new [MSR documentation](https://xmrig.com/docs/miner/randomx-optimization-guide/msr).
+- [#1418](https://github.com/xmrig/xmrig/pull/1418) Increased stratum send buffer size.
 
 # v5.2.1
 - [#1408](https://github.com/xmrig/xmrig/pull/1408) Added RandomX boost script for Linux (if you don't like run miner with root privileges).
diff --git a/src/base/net/stratum/Client.h b/src/base/net/stratum/Client.h
index da4234845..fbf594a51 100644
--- a/src/base/net/stratum/Client.h
+++ b/src/base/net/stratum/Client.h
@@ -128,7 +128,7 @@ private:
 
     static inline Client *getClient(void *data) { return m_storage.get(data); }
 
-    char m_sendBuf[2048] = { 0 };
+    char m_sendBuf[4096] = { 0 };
     const char *m_agent;
     Dns *m_dns;
     RecvBuf<kInputBufferSize> m_recvBuf;
diff --git a/src/version.h b/src/version.h
index 74d47b4fc..136563061 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 miner"
-#define APP_VERSION   "5.3.0-dev"
+#define APP_VERSION   "5.3.0"
 #define APP_DOMAIN    "xmrig.com"
 #define APP_SITE      "www.xmrig.com"
 #define APP_COPYRIGHT "Copyright (C) 2016-2019 xmrig.com"