diff --git a/stack.yaml b/stack.yaml
index 005cfcf..106584f 100644
--- a/stack.yaml
+++ b/stack.yaml
@@ -36,7 +36,7 @@ resolver: lts-10.3
 # non-dependency (i.e. a user package), and its test suites and benchmarks
 # will not be run. This is useful for tweaking upstream packages.
 packages:
-- .
+  - .
 # Dependency packages to be pulled from upstream that are not in the resolver
 # (e.g., acme-missiles-0.3)
 # extra-deps: []
@@ -63,4 +63,4 @@ packages:
 # extra-lib-dirs: [/path/to/dir]
 #
 # Allow a newer minor version of GHC than the snapshot specifies
-# compiler-check: newer-minor
\ No newline at end of file
+# compiler-check: newer-minor