diff --git a/.gitignore b/.gitignore
index 36bcfa78..42e81982 100644
--- a/.gitignore
+++ b/.gitignore
@@ -4,6 +4,7 @@
 *.hi
 dist/
 dist-stack/
+stack.yaml.lock
 .stack-work
 *.swp
 client_session_key.aes
@@ -23,4 +24,4 @@ tarballs/
 .bash_history
 
 # OS X
-.DS_Store
\ No newline at end of file
+.DS_Store