diff --git a/stack.yaml b/stack.yaml
index ba50f5778..5b67c6660 100644
--- a/stack.yaml
+++ b/stack.yaml
@@ -27,8 +27,6 @@ extra-deps:
 - libyaml-0.1.0.0
 - hslua-1.0.1
 - hslua-module-text-0.2.0
-- skylighting-0.7.5
-- skylighting-core-0.7.5
 ghc-options:
    "$locals": -fhide-source-paths -XNoImplicitPrelude
-resolver: lts-12.18
+resolver: lts-12.23