diff --git a/projects/CMakeLists.txt b/projects/CMakeLists.txt
index 4839dd39670..82fd6c8c9c7 100644
--- a/projects/CMakeLists.txt
+++ b/projects/CMakeLists.txt
@@ -9,7 +9,8 @@ foreach(entry ${entries})
        (NOT ${entry} STREQUAL ${CMAKE_CURRENT_SOURCE_DIR}/libcxx) AND
        (NOT ${entry} STREQUAL ${CMAKE_CURRENT_SOURCE_DIR}/libcxxabi) AND
        (NOT ${entry} STREQUAL ${CMAKE_CURRENT_SOURCE_DIR}/libunwind) AND
-       (NOT ${entry} STREQUAL ${CMAKE_CURRENT_SOURCE_DIR}/test-suite))
+       (NOT ${entry} STREQUAL ${CMAKE_CURRENT_SOURCE_DIR}/test-suite) AND
+       (NOT ${entry} STREQUAL ${CMAKE_CURRENT_SOURCE_DIR}/parallel-libs))
       add_subdirectory(${entry})
     endif()
   endif()
@@ -33,3 +34,4 @@ if(${LLVM_BUILD_RUNTIME})
 endif()
 
 add_llvm_external_project(dragonegg)
+add_llvm_external_project(parallel-libs)