diff --git a/sdk/android-ios/release_android.sh b/sdk/android-ios/release_android.sh
index 7d12525..a52adfa 100755
--- a/sdk/android-ios/release_android.sh
+++ b/sdk/android-ios/release_android.sh
@@ -1,5 +1,5 @@
 #/bin/bash
-VER="v5.2"
+VER="v5.3"
 rm -rf sdk-android-*.tar.gz
 rm -rf android
 mkdir android
diff --git a/sdk/android-ios/release_ios.sh b/sdk/android-ios/release_ios.sh
index 96a50af..633981c 100755
--- a/sdk/android-ios/release_ios.sh
+++ b/sdk/android-ios/release_ios.sh
@@ -1,5 +1,5 @@
 #/bin/bash
-VER="v5.2"
+VER="v5.3"
 rm -rf sdk-ios-*.tar.gz
 rm -rf ios
 mkdir ios
diff --git a/sdk/windows-linux/release_linux.sh b/sdk/windows-linux/release_linux.sh
index a6653d8..76aaf4b 100755
--- a/sdk/windows-linux/release_linux.sh
+++ b/sdk/windows-linux/release_linux.sh
@@ -1,5 +1,5 @@
 #/bin/bash
-VER="v5.2"
+VER="v5.3"
 
 rm -rf sdk-linux-*.tar.gz
 rm -rf README.md libproxy-sdk.so libproxy-sdk.h libproxy-sdk.a
diff --git a/sdk/windows-linux/release_mac.sh b/sdk/windows-linux/release_mac.sh
index a872e3c..b2b5e4e 100755
--- a/sdk/windows-linux/release_mac.sh
+++ b/sdk/windows-linux/release_mac.sh
@@ -1,5 +1,5 @@
 #/bin/bash
-VER="v5.2"
+VER="v5.3"
 
 rm -rf *.tar.gz
 rm -rf README.md libproxy-sdk.dylib libproxy-sdk.h
diff --git a/sdk/windows-linux/release_windows.sh b/sdk/windows-linux/release_windows.sh
index 176f832..ab26512 100755
--- a/sdk/windows-linux/release_windows.sh
+++ b/sdk/windows-linux/release_windows.sh
@@ -1,5 +1,5 @@
 #/bin/bash
-VER="v5.2"
+VER="v5.3"
 
 #sudo rm /usr/local/go
 #sudo ln -s /usr/local/go1.10.1 /usr/local/go