diff --git a/stack.yaml b/stack.yaml
index 4c13e9f..27e3cfa 100644
--- a/stack.yaml
+++ b/stack.yaml
@@ -17,7 +17,7 @@
 #
 # resolver: ./custom-snapshot.yaml
 # resolver: https://example.com/snapshots/2018-01-01.yaml
-resolver: lts-14.3
+resolver: lts-18.18
 
 # User packages to be built.
 # Various formats can be used as shown in the example below.