diff --git a/Sources/CMakeLists.txt b/Sources/CMakeLists.txt
index 8f8e80665..13c3313a6 100644
--- a/Sources/CMakeLists.txt
+++ b/Sources/CMakeLists.txt
@@ -7,6 +7,3 @@ Licensed under Apache License v2.0 with Runtime Library Exception
 See https://swift.org/LICENSE.txt for license information
 #]]
 
-add_subdirectory(SwiftDocC)
-add_subdirectory(SwiftDocCUtilities)
-add_subdirectory(docc)