diff --git a/.gitignore b/.gitignore
index 5e26cc3..b5d3f6b 100644
--- a/.gitignore
+++ b/.gitignore
@@ -14,3 +14,6 @@ tarballs
 # Where do these files come from?  They're not readable.
 # For instance, .#Help.page
 .#*
+.stack-work/
+stack.yaml.lock
+*.swp
diff --git a/stack.yaml b/stack.yaml
index dcb744c..87796e9 100644
--- a/stack.yaml
+++ b/stack.yaml
@@ -1,4 +1,5 @@
-resolver: lts-9.20 # ghc-8.0.2
+resolver: lts-23.3 # ghc-9.8.4
+
 
 flags: {}