diff --git a/CMakeLists.txt b/CMakeLists.txt
index 8131d4a5..92b5d180 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -171,7 +171,7 @@ if (BUILD_PYTHON)
     endwhile ()
 
     if (NOT Boost_PYTHON_FOUND)
-        foreach (PyVer 3 36 37 38)
+        foreach (PyVer 3 36 37 38 39)
             find_package(Boost QUIET COMPONENTS python${PyVer} ${boost_libs})
             if ("${Boost_LIBRARIES}" MATCHES ".*(python|PYTHON).*" )
                 set(Boost_PYTHON_FOUND TRUE)