diff --git a/test/appveyor.yml b/test/appveyor.yml
index 5c1e7fa..0c47267 100644
--- a/test/appveyor.yml
+++ b/test/appveyor.yml
@@ -63,7 +63,7 @@ before_build:
     - set BOOST=C:/boost-local
     - git clone -b %BOOST_BRANCH% --depth 10 https://github.com/boostorg/boost.git %BOOST%
     - cd %BOOST%
-    - git submodule update --init --depth 10 tools/build tools/boostdep
+    - git submodule update --init --depth 10 tools/build tools/boostdep libs/unordered # Boost.TypeIndex examples need Boost.Unordered
 
     - rm -rf %BOOST%/libs/%BOOST_LIBS_FOLDER%
     - mv -f %APPVEYOR_BUILD_FOLDER% %BOOST%/libs/%BOOST_LIBS_FOLDER%