diff --git a/CMakeLists.txt b/CMakeLists.txt
index 915c1f322..4b8e40591 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -29,7 +29,7 @@ if(NOT CMAKE_VERSION VERSION_LESS 3.19)
 
   # Using target_sources with PRIVATE or PUBLIC on INTERFACE targets requires 3.19
 
-  file(GLOB_RECURSE headers CONFIGURE_DEPENDS include/*.hpp)
+  file(GLOB_RECURSE headers ${BOOST_CONFIGURE_DEPENDS} include/*.hpp)
   target_sources(boost_unordered PRIVATE ${headers})
   unset(headers)