diff --git a/win/run-cmake.bat b/win/run-cmake.bat
index b8c81f03f9..415ceaae4c 100755
--- a/win/run-cmake.bat
+++ b/win/run-cmake.bat
@@ -93,7 +93,7 @@ set LIBXML2_INCLUDE_DIR=%DEPS_DIR%\OpenCOLLADA\Externals\LibXML\include
 set LIBXML2_LIBRARIES=%INSTALL_DIR%\OpenCOLLADA\lib\opencollada\xml.lib
 set HDF5_INCLUDE_DIR=%INSTALL_DIR%\HDF5-%HDF5_VERSION%-win%ARCH_BITS%\include
 set HDF5_LIBRARY_DIR=%INSTALL_DIR%\HDF5-%HDF5_VERSION%-win%ARCH_BITS%\lib
-if not defined PY_VER_MAJOR_MINOR set PY_VER_MAJOR_MINOR=34
+if not defined PY_VER_MAJOR_MINOR set PY_VER_MAJOR_MINOR=311
 if not defined PYTHONHOME set PYTHONHOME=%INSTALL_DIR%\Python%PY_VER_MAJOR_MINOR%
 set PYTHON_INCLUDE_DIR=%PYTHONHOME%\include
 set PYTHON_LIBRARY=%PYTHONHOME%\libs\python%PY_VER_MAJOR_MINOR%.lib