diff --git a/stack-7.8.yaml b/stack-7.8.yaml
deleted file mode 100644
index 809bd2e..0000000
--- a/stack-7.8.yaml
+++ /dev/null
@@ -1,5 +0,0 @@
-flags: {}
-packages:
-- '.'
-extra-deps: []
-resolver: lts-2.22
diff --git a/stack.yaml b/stack.yaml
index e217d4b..ed928ac 100644
--- a/stack.yaml
+++ b/stack.yaml
@@ -1,4 +1,4 @@
-resolver: lts-4.2
+resolver: lts-5.2
 packages:
 - '.'
 extra-deps: []