diff --git a/CMakeLists.txt b/CMakeLists.txt
index b952d7bf..6d43569b 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -8,7 +8,7 @@ if(${VERSION} MATCHES [[([0-9]+)\.([0-9]+)\.([0-9]+)]])
     set(LIBXML_MICRO_VERSION ${CMAKE_MATCH_3})
 endif()
 
-project(libxml2 VERSION ${VERSION} LANGUAGES C)
+project(libxml2 VERSION ${VERSION} LANGUAGES C CXX)
 
 set(CMAKE_C_STANDARD 11)