diff --git a/Help/release/dev/ExternalProject_CMAKE_CACHE_DEFAULT_ARGS.rst b/Help/release/dev/ExternalProject_CMAKE_CACHE_DEFAULT_ARGS.rst
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+ExternalProject_CMAKE_CACHE_DEFAULT_ARGS
+----------------------------------------
+
+* The :module:`ExternalProject` module ``ExternalProject_Add`` function
+  learned a new ``CMAKE_CACHE_DEFAULT_ARGS`` option to initialize cache
+  values in the external project without setting them on future builds.