diff --git a/.gitignore b/.gitignore
index 33b854e..8d68844 100644
--- a/.gitignore
+++ b/.gitignore
@@ -3,3 +3,4 @@
 dist
 .cabal-sandbox/
 cabal.sandbox.config
+.stack-work/
diff --git a/stack.yaml b/stack.yaml
new file mode 100644
index 0000000..6ed2acc
--- /dev/null
+++ b/stack.yaml
@@ -0,0 +1,4 @@
+packages:
+- '.'
+extra-deps: []
+resolver: lts-8.9