diff --git a/doc/win-dev.ps1 b/doc/win-dev.ps1
index 3ac0e0e4aa2..a03d79d179d 100644
--- a/doc/win-dev.ps1
+++ b/doc/win-dev.ps1
@@ -19,7 +19,7 @@ $MsvcVersion = '14.3'
 
 $BoostVersion = @(1, 92, 0)
 
-$OpensslVersion = '3_5_8'
+$OpensslVersion = '3_5_9'
 
 switch ($Env:BITS) {
 	32 { }
diff --git a/tools/win32/configure.ps1 b/tools/win32/configure.ps1
index ceb3b22c87a..eb5fcc0bcae 100644
--- a/tools/win32/configure.ps1
+++ b/tools/win32/configure.ps1
@@ -33,7 +33,7 @@ if (-not (Test-Path env:CMAKE_ARGS)) {
   $env:CMAKE_ARGS = '[]'
 }
 if (-not (Test-Path env:OPENSSL_ROOT_DIR)) {
-  $env:OPENSSL_ROOT_DIR = "c:\local\OpenSSL_3_5_8-Win${env:BITS}"
+  $env:OPENSSL_ROOT_DIR = "c:\local\OpenSSL_3_5_9-Win${env:BITS}"
 }
 if (-not (Test-Path env:BOOST_ROOT)) {
   $env:BOOST_ROOT = "c:\local\boost_1_92_0-Win${env:BITS}"