diff --git a/stack.yaml b/stack.yaml
index c1f65eaa0..09deab783 100644
--- a/stack.yaml
+++ b/stack.yaml
@@ -7,20 +7,11 @@ packages:
 extra-deps:
 - hslua-1.3.0
 - hslua-module-path-0.1.0
-- jira-wiki-markup-1.3.3
-- commonmark-0.1.1.4
-- commonmark-extensions-0.2.0.4
-- commonmark-pandoc-0.2.0.1
-- tasty-bench-0.2.1
-- citeproc-0.3.0.8
-- skylighting-0.10.4
-- skylighting-core-0.10.4
-- xml-conduit-1.9.1.0
 #- citeproc:
 #  git: https://github.com/jgm/citeproc.git
 #  commit: feb3b7580c6738eec3b23921f7c1739cfba611aa
 ghc-options:
    "$locals": -fhide-source-paths -Wno-missing-home-modules
-resolver: lts-17.2
+resolver: lts-17.5
 nix:
   packages: [zlib]