diff --git a/.travis.yml b/.travis.yml
index 0528f49d..7ed2b599 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -211,7 +211,7 @@ install:
   - git submodule init libs/typeof
   - git submodule init libs/utility
 
-  - git submodule init tools/build
+  - git submodule init libs/headers tools/boost_install tools/build
   - git submodule update
 
   - rm -rf libs/fusion
diff --git a/appveyor.yml b/appveyor.yml
index 4613ff61..27f42c02 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -73,7 +73,7 @@ install:
   - git submodule init libs/typeof
   - git submodule init libs/utility
 
-  - git submodule init tools/build
+  - git submodule init libs/headers tools/boost_install tools/build
   - git submodule update
   - xcopy /s /e /q %APPVEYOR_BUILD_FOLDER% libs\fusion
   - cmd /c bootstrap