diff --git a/Other/xray-core/build.ps1 b/Other/xray-core/build.ps1
index 9cf04d76..b8a45050 100644
--- a/Other/xray-core/build.ps1
+++ b/Other/xray-core/build.ps1
@@ -1,6 +1,6 @@
 Set-Location (Split-Path $MyInvocation.MyCommand.Path -Parent)
 
-git clone https://github.com/xtls/xray-core -b 'v1.4.5' src
+git clone https://github.com/xtls/xray-core -b 'v1.5.5' src
 if ( -Not $? ) {
     exit $lastExitCode
 }
diff --git a/Other/xray-plugin/build.ps1 b/Other/xray-plugin/build.ps1
index 7b50b31a..4f3e3df8 100644
--- a/Other/xray-plugin/build.ps1
+++ b/Other/xray-plugin/build.ps1
@@ -1,6 +1,6 @@
 Set-Location (Split-Path $MyInvocation.MyCommand.Path -Parent)
 
-git clone https://github.com/teddysun/xray-plugin -b 'v1.4.5' src
+git clone https://github.com/teddysun/xray-plugin -b 'v1.5.5' src
 if ( -Not $? ) {
     exit $lastExitCode
 }