diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index b2a5bc5..3d99583 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -18,8 +18,8 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        otp: ["26.0"]
-        elixir: ["1.16.0"]
+        otp: ["28.1"]
+        elixir: ["1.19.2"]
 
     steps:
       - name: Set up Elixir
diff --git a/yamlfmt.yml b/yamlfmt.yml
new file mode 100644
index 0000000..0d7c56d
--- /dev/null
+++ b/yamlfmt.yml
@@ -0,0 +1,3 @@
+formatter:
+  type: basic
+  retain_line_breaks_single: true