diff --git a/.gitignore b/.gitignore
index e6bbe53..97ec975 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,7 +1,5 @@
-/bower_components/
 /node_modules/
 /output/
-/.psci*
 /src/.webpack.js
-.pulp-cache/
 .psc-ide-port
+/.spago
diff --git a/bower.json b/bower.json
deleted file mode 100644
index a7d4645..0000000
--- a/bower.json
+++ /dev/null
@@ -1,28 +0,0 @@
-{
-  "name": "purescript-yaml-next",
-  "moduleType": [
-    "node"
-  ],
-  "ignore": [
-    "**/.*",
-    "node_modules",
-    "bower_components",
-    "output",
-    "test",
-    "docs"
-  ],
-  "dependencies": {
-    "js-yaml": "^3.4.6",
-    "purescript-argonaut-core": "^4.0.1",
-    "purescript-foreign": "^5.0.0",
-    "purescript-foreign-generic": "^7.0.0",
-    "purescript-functions": "^4.0.0",
-    "purescript-ordered-collections": "^1.1.0",
-    "purescript-unsafe-coerce": "^4.0.0"
-  },
-  "devDependencies": {
-    "purescript-argonaut-codecs": "^4.0.2",
-    "purescript-console": "^4.1.0",
-    "purescript-spec": "^3.0.0"
-  }
-}
diff --git a/package-lock.json b/package-lock.json
index a5a1e3a..4a1ed1e 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -8,7 +8,7 @@
       "resolved": "https://registry.npmjs.org/argparse/-/argparse-1.0.10.tgz",
       "integrity": "sha512-o5Roy6tNG4SL/FOkCAN6RzjiakZS25RLYFrcMttJqbdd8BWrnA+fGz57iN5Pb06pvBGvl5gQ0B48dJlslXvoTg==",
       "requires": {
-        "sprintf-js": "1.0.3"
+        "sprintf-js": "~1.0.2"
       }
     },
     "esprima": {
@@ -17,12 +17,12 @@
       "integrity": "sha512-eGuFFw7Upda+g4p+QHvnW0RyTX/SVeJBDM/gCtMARO0cLuT2HcEKnTPvhjV6aGeqrCB/sbNop0Kszm0jsaWU4A=="
     },
     "js-yaml": {
-      "version": "3.12.0",
-      "resolved": "https://registry.npmjs.org/js-yaml/-/js-yaml-3.12.0.tgz",
-      "integrity": "sha512-PIt2cnwmPfL4hKNwqeiuz4bKfnzHTBv6HyVgjahA6mPLwPDzjDWrplJBMjHUFxku/N3FlmrbyPclad+I+4mJ3A==",
+      "version": "3.13.1",
+      "resolved": "https://registry.npmjs.org/js-yaml/-/js-yaml-3.13.1.tgz",
+      "integrity": "sha512-YfbcO7jXDdyj0DGxYVSlSeQNHbD7XPWvrVWeVUujrQEoZzWJIRrCPoyk6kL6IAjAG2IolMK4T0hNUe0HOUs5Jw==",
       "requires": {
-        "argparse": "1.0.10",
-        "esprima": "4.0.1"
+        "argparse": "^1.0.7",
+        "esprima": "^4.0.0"
       }
     },
     "sprintf-js": {
diff --git a/package.json b/package.json
index db97dbd..e72debd 100644
--- a/package.json
+++ b/package.json
@@ -1,16 +1,15 @@
 {
   "name": "purescript-yaml-next",
   "license": "SEE LICENSE FILE",
-  "repository": "",
+  "repository": "https://github.com/archaeron/purescript-yaml",
   "private": true,
   "contributors": [],
   "main": "main.js",
   "scripts": {
-    "postinstall": "bower install",
-    "build": "pulp build"
+    "postinstall": "spago build"
   },
   "devDependencies": {},
   "dependencies": {
-    "js-yaml": "^3.12.0"
+    "js-yaml": "^3.13.1"
   }
 }
diff --git a/packages.dhall b/packages.dhall
new file mode 100644
index 0000000..f5795de
--- /dev/null
+++ b/packages.dhall
@@ -0,0 +1,8 @@
+let upstream =
+      https://github.com/purescript/package-sets/releases/download/psc-0.13.3-20191005/packages.dhall sha256:ba287d858ada09c4164792ad4e643013b742c208cbedf5de2e35ee27b64b6817
+
+let overrides = {=}
+
+let additions = {=}
+
+in  upstream // overrides // additions
diff --git a/spago.dhall b/spago.dhall
new file mode 100644
index 0000000..0dc8780
--- /dev/null
+++ b/spago.dhall
@@ -0,0 +1,20 @@
+{ name =
+    "yaml-next"
+, dependencies =
+    [ "argonaut-codecs"
+    , "argonaut-core"
+    , "console"
+    , "effect"
+    , "foreign"
+    , "foreign-generic"
+    , "functions"
+    , "ordered-collections"
+    , "psci-support"
+    , "spec"
+    , "unsafe-coerce"
+    ]
+, packages =
+    ./packages.dhall
+, sources =
+    [ "src/**/*.purs", "test/**/*.purs" ]
+}
diff --git a/src/Data/YAML/Foreign/Decode.purs b/src/Data/YAML/Foreign/Decode.purs
index ec0a88a..8483716 100644
--- a/src/Data/YAML/Foreign/Decode.purs
+++ b/src/Data/YAML/Foreign/Decode.purs
@@ -5,8 +5,7 @@ module Data.YAML.Foreign.Decode (
 
 import Foreign (F, Foreign, ForeignError(..), fail)
 import Foreign.Generic (genericDecode)
-import Foreign.Generic.Class (class GenericDecode)
-import Foreign.Generic.Types (Options)
+import Foreign.Generic.Class (class GenericDecode, Options)
 import Data.Function.Uncurried (Fn3, runFn3)
 import Data.Generic.Rep (class Generic)
 import Prelude ((>=>), (<<<), pure, (>>=))
diff --git a/test/Instances.purs b/test/Instances.purs
index 0d8f5c2..b4d0ba4 100644
--- a/test/Instances.purs
+++ b/test/Instances.purs
@@ -2,7 +2,7 @@ module Test.Instances where
 
 import Data.YAML.Foreign.Encode
 import Data.Argonaut.Core (toObject, toString)
-import Data.Argonaut.Decode (getField)
+import Data.Argonaut.Decode.Combinators (getField)
 import Data.Argonaut.Decode.Class (class DecodeJson)
 import Data.Either (Either(..))
 import Data.Generic.Rep (class Generic)
diff --git a/test/Main.purs b/test/Main.purs
index a107dcb..e3d0d9a 100644
--- a/test/Main.purs
+++ b/test/Main.purs
@@ -1,19 +1,21 @@
 module Test.Main where
 
-import Data.Map as Map
 import Control.Monad.Except (runExcept)
 import Data.Argonaut.Decode (class DecodeJson, decodeJson)
 import Data.Either (Either(..))
 import Data.Map (Map)
+import Data.Map as Map
 import Data.YAML.Foreign.Decode (parseYAMLToJson)
 import Data.YAML.Foreign.Encode (printYAML)
-import Effect
+import Effect (Effect)
+import Effect.Aff (launchAff_)
 import Prelude (Unit, discard, pure, ($), (<<<), (>>=))
 import Test.Instances (GeoObject(..), Mobility(..), Point(..))
 import Test.Spec (describe, it)
 import Test.Spec.Assertions (shouldEqual)
 import Test.Spec.Reporter.Console (consoleReporter)
-import Test.Spec.Runner (run)
+import Test.Spec.Runner (runSpec)
+
 
 yamlInput :: String
 yamlInput = """
@@ -134,7 +136,7 @@ fullCircle :: String -> Either String String
 fullCircle yamlString = (readPoint yamlString) >>= pure <<< printYAML
 
 main :: Effect Unit
-main = run [consoleReporter] do
+main = launchAff_ $ runSpec [consoleReporter] do
   describe "purescript-yaml" do
     describe "decode" do
       it "Decodes YAML" do