thodg/libgit2

diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index a594146..851fa5f 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -52,9 +52,12 @@ jobs:
     strategy:
       matrix:
         platform:
-        - - os: ubuntu-latest
-            image: 'ubuntu:xenial'
-        - - os: macos-latest
-        - - os: windows-latest
+        -
+          os: ubuntu-latest
+          image: 'ubuntu:xenial'
+        -
+          os: macos-latest
+        -
+          os: windows-latest
     name: Build
       runs-os: ${{ matrix.platform.os }}