diff --git a/.editorconfig b/.editorconfig
index 5c2baf6..9035bef 100644
--- a/.editorconfig
+++ b/.editorconfig
@@ -8,5 +8,5 @@ indent_style = space
 insert_final_newline = true
 trim_trailing_whitespace = true
 
-[*.{h,hh,hpp,c,cc,cpp,cxx}]
+[*.{h,hh,hpp,c,cc,cpp,cxx,yml}]
 indent_size = 2
diff --git a/appveyor.yml b/appveyor.yml
index 2d265fc..4d5e94f 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -1,5 +1,8 @@
 image: Visual Studio 2017
 
+init:
+  - cmd: git submodule update --init --recursive
+
 build_script:
   - cmd: mkdir tmp
   - cmd: cd tmp