diff --git a/stack.yaml b/stack.yaml
index 3854edaa..56b85912 100644
--- a/stack.yaml
+++ b/stack.yaml
@@ -1,22 +1,14 @@
-resolver: lts-13.26
+resolver: lts-17.6
 flags:
   aeson-pretty:
     lib-only: true
   these:
     assoc: false
-    quickcheck: false
 packages:
 - '.'
 extra-deps:
-# purescript 0.14.0-rc5
-- github: purescript/purescript
-  commit: 7ecc42669c69682996f2196ba2eef6c4ca827348
-  subdirs:
-    - .
-    - lib/purescript-ast
-    - lib/purescript-cst
-- happy-1.19.9
+- purescript-0.14.1
+- purescript-ast-0.1.1.0
+- purescript-cst-0.1.1.0
+- happy-1.20.0
 - language-javascript-0.7.0.0
-- network-3.0.1.1
-- these-1.0.1
-- semialign-1
diff --git a/trypurescript.cabal b/trypurescript.cabal
index e2575430..9894408a 100644
--- a/trypurescript.cabal
+++ b/trypurescript.cabal
@@ -13,9 +13,14 @@ author: Phil Freeman
 data-dir: ""
 
 executable trypurescript
-    build-depends: base ==4.*,
+    -- Since no one depends on this project as a library,
+    -- packages below are `-any` because their versions are determined
+    -- by the `stack.yml` file. Versions correspond to the ones
+    -- specified in the resolver (i.e. the package set)
+    -- unless it is a versioned library added via `extra-deps` field.
+    build-depends: base -any,
                    aeson -any,
-                   bytestring >=0.10.0.2 && <0.11,
+                   bytestring -any,
                    data-default -any,
                    directory -any,
                    filepath -any,
@@ -24,9 +29,9 @@ executable trypurescript
                    purescript,
                    purescript-cst,
                    containers -any,
-                   http-types >= 0.8.5,
-                   transformers ==0.5.*,
-                   mtl ==2.2.2,
+                   http-types -any,
+                   transformers -any,
+                   mtl -any,
                    text -any,
                    time -any,
                    warp -any