diff --git a/bin/lein.bat b/bin/lein.bat
index f0d2ce44..af8a78ed 100755
--- a/bin/lein.bat
+++ b/bin/lein.bat
@@ -154,7 +154,7 @@ if "x%HTTP_CLIENT%" == "x" goto TRY_POWERSHELL
 call powershell -? >nul 2>&1
 if NOT ERRORLEVEL 0 goto TRY_WGET
     set LAST_HTTP_CLIENT=powershell
-    powershell -Command "& {param($a,$f) $client = New-Object System.Net.WebClient;  $client.Proxy.Credentials =[System.Net.CredentialCache]::DefaultNetworkCredentials; $client.DownloadFile($a, $f)}" ""%2"" ""%1""
+    powershell -Command "& {param($a,$f) $client = New-Object System.Net.WebClient; [Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12; $client.Proxy.Credentials =[System.Net.CredentialCache]::DefaultNetworkCredentials; $client.DownloadFile($a, $f)}" ""%2"" ""%1""
     SET RC=%ERRORLEVEL%
     goto EXITRC