diff --git a/stack.yaml b/stack.yaml
index 6fba68376537630ad4b0229f3fc0e5fe6bc0d78f..fd510af7413b420e8e4bcac0983c7110b785639a 100644
--- a/stack.yaml
+++ b/stack.yaml
@@ -1,5 +1,4 @@
-resolver: lts-12.7
+resolver: lts-12.21
 packages:
 - .
-extra-deps:
-- patience-0.1.1
+extra-deps: []