diff --git a/source/CMakeLists.txt b/source/CMakeLists.txt
index 1fb6b85e..a07735b1 100644
--- a/source/CMakeLists.txt
+++ b/source/CMakeLists.txt
@@ -9,6 +9,11 @@ if (${FORCE_COLORED_OUTPUT})
     endif ()
 endif ()
 
+if(ROOT_VERSION VERSION_LESS "6.24")
+  message ( WARNING " Support for ROOT version " ${ROOT_VERSION} " will reach end soon!")
+endif() 
+
+
 if(ROOT_VERSION VERSION_GREATER_EQUAL "6.23.01")
     message ( "----> Use OSTAP/CMAKE setting for ROOT  >6.23")
     include(CMakeROOT_6_23.cmake)
diff --git a/source/CMakeROOT_6_23.cmake b/source/CMakeROOT_6_23.cmake
index e31a4753..68ace299 100644
--- a/source/CMakeROOT_6_23.cmake
+++ b/source/CMakeROOT_6_23.cmake
@@ -41,6 +41,7 @@ if     (PY2VERSION_ROOT)
   set( PYTHON_VERSION      ${Python2_VERSION}      PARENT_SCOPE)
   set( PYTHON_EXECUTABLE   ${Python2_EXECUTABLE}   PARENT_SCOPE)
   set_target_properties( root_pyroot PROPERTIES INTERFACE_LINK_LIBRARIES "ROOT::PyROOT2;ROOT::ROOTTPython;Python2::Python")
+  message ( WARNING " Support for Python " ${Python_version} " will reach end soon!" ) 
 elseif (PY3VERSION_ROOT)
   find_package(Python3 ${PY3VERSION_ROOT} COMPONENTS Interpreter Development NumPy)
   ## find_package(Python3 ${PY3VERSION_ROOT} COMPONENTS Interpreter Development)