diff --git a/CHANGELOG.md b/CHANGELOG.md
index 4eb09e6fa..eb7f2378a 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,6 @@
+# v2.13.1
+[#946](https://github.com/xmrig/xmrig/pull/946) Optimized software AES implementations for CPUs without hardware AES support. `cn/r`, `cn/wow` up to 2.6 times faster, 4-9% improvements for other algorithms.
+
 # v2.13.0
 - **[#938](https://github.com/xmrig/xmrig/issues/938) Added support for new algorithm `cryptonight/r`, short alias `cn/r` (also known as CryptoNightR or CryptoNight variant 4), for upcoming [Monero](https://www.getmonero.org/) fork on March 9, thanks [@SChernykh](https://github.com/SChernykh).**
 - [#939](https://github.com/xmrig/xmrig/issues/939) Added support for dynamic (runtime) pools reload.
diff --git a/src/common/Platform_unix.cpp b/src/common/Platform_unix.cpp
index 901df4be5..3066630ae 100644
--- a/src/common/Platform_unix.cpp
+++ b/src/common/Platform_unix.cpp
@@ -61,6 +61,10 @@ char *Platform::createUserAgent()
 
 #   if defined(__x86_64__)
     length += snprintf(buf + length, max - length, "x86_64) libuv/%s", uv_version_string());
+#   elif defined(__aarch64__)
+    length += snprintf(buf + length, max - length, "aarch64) libuv/%s", uv_version_string());
+#   elif defined(__arm__)
+    length += snprintf(buf + length, max - length, "arm) libuv/%s", uv_version_string());
 #   else
     length += snprintf(buf + length, max - length, "i686) libuv/%s", uv_version_string());
 #   endif
diff --git a/src/version.h b/src/version.h
index f30d4d1e7..5b09f86b8 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   "2.13.1-dev"
+#define APP_VERSION   "2.13.1"
 #define APP_DOMAIN    "xmrig.com"
 #define APP_SITE      "www.xmrig.com"
 #define APP_COPYRIGHT "Copyright (C) 2016-2019 xmrig.com"