diff --git a/.leaf.yml b/.leaf.yml
deleted file mode 100644
index 39a01bf..0000000
--- a/.leaf.yml
+++ /dev/null
@@ -1,5 +0,0 @@
-inherits: haskell
-
-package:
-  name: tokstyle
-  version: 0.0.1
diff --git a/appveyor.yml b/appveyor.yml
index 4921d40..676c4fc 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -1,15 +1,16 @@
+---
 cache:
-- '%APPDATA%\cabal'
-- '%APPDATA%\ghc'
+  - '%APPDATA%\cabal'
+  - '%APPDATA%\ghc'
 
 install:
-- choco install ghc --version 8.2.2
-- refreshenv
+  - choco install ghc --version 8.2.2
+  - refreshenv
 
 build_script:
-- cabal update
-- cabal install alex happy
-- cabal install --enable-tests --enable-benchmarks --disable-documentation --only-dependencies
+  - cabal update
+  - cabal install alex happy
+  - cabal install --enable-tests --enable-benchmarks --disable-documentation --only-dependencies
 
 test_script:
-- cabal test
+  - cabal test
diff --git a/stack.yaml b/stack.yaml
index f721a3d..edbd9e8 100644
--- a/stack.yaml
+++ b/stack.yaml
@@ -1,2 +1,3 @@
+---
 packages: [.]
 resolver: lts-6.27