diff --git a/cmake/CPM.cmake b/cmake/CPM.cmake
index 8269a8bf..c1c05320 100644
--- a/cmake/CPM.cmake
+++ b/cmake/CPM.cmake
@@ -154,7 +154,7 @@ set(CPM_DRY_RUN
 if(DEFINED ENV{CPM_SOURCE_CACHE})
   set(CPM_SOURCE_CACHE_DEFAULT $ENV{CPM_SOURCE_CACHE})
 else()
-  set(CPM_SOURCE_CACHE_DEFAULT OFF)
+  set(CPM_SOURCE_CACHE_DEFAULT ${CMAKE_CURRENT_BINARY_DIR}/.cpm-cache)
 endif()
 
 set(CPM_SOURCE_CACHE