diff --git a/.travis.yml b/.travis.yml
index 8daa38c..116705f 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -5,7 +5,8 @@ node_js: stable
 env:
   - PATH=$HOME/purescript:$PATH
 install:
-  - TAG=$(basename $(curl --location --silent --output /dev/null -w %{url_effective} https://github.com/purescript/purescript/releases/latest))
+  # - TAG=$(basename $(curl --location --silent --output /dev/null -w %{url_effective} https://github.com/purescript/purescript/releases/latest))
+  - TAG=v0.14.0-rc3
   - curl --location --output $HOME/purescript.tar.gz https://github.com/purescript/purescript/releases/download/$TAG/linux64.tar.gz
   - tar -xvf $HOME/purescript.tar.gz -C $HOME/
   - chmod a+x $HOME/purescript
diff --git a/bower.json b/bower.json
index 0deaaff..d77c87e 100644
--- a/bower.json
+++ b/bower.json
@@ -20,22 +20,22 @@
     "package.json"
   ],
   "dependencies": {
-    "purescript-arrays": "^5.0.0",
-    "purescript-foldable-traversable": "^4.0.0",
-    "purescript-functions": "^4.0.0",
-    "purescript-gen": "^2.1.0",
-    "purescript-lists": "^5.0.0",
-    "purescript-maybe": "^4.0.0",
-    "purescript-prelude": "^4.1.0",
-    "purescript-st": "^4.0.0",
-    "purescript-tailrec": "^4.0.0",
-    "purescript-tuples": "^5.0.0",
-    "purescript-unfoldable": "^4.0.0",
-    "purescript-typelevel-prelude": ">= 4.0.0 < 6.0.0"
+    "purescript-arrays": "master",
+    "purescript-foldable-traversable": "master",
+    "purescript-functions": "master",
+    "purescript-gen": "master",
+    "purescript-lists": "master",
+    "purescript-maybe": "master",
+    "purescript-prelude": "master",
+    "purescript-st": "master",
+    "purescript-tailrec": "master",
+    "purescript-tuples": "master",
+    "purescript-unfoldable": "master",
+    "purescript-typelevel-prelude": "master"
   },
   "devDependencies": {
-    "purescript-quickcheck": "^6.0.0",
-    "purescript-minibench": "^2.0.0",
-    "purescript-assert": "^4.0.0"
+    "purescript-quickcheck": "master",
+    "purescript-minibench": "master",
+    "purescript-assert": "master"
   }
 }
diff --git a/package.json b/package.json
index a45b0fa..c65803d 100644
--- a/package.json
+++ b/package.json
@@ -12,7 +12,7 @@
   "devDependencies": {
     "eslint": "^4.19.1",
     "pulp": "^15.0.0",
-    "purescript-psa": "^0.6.0",
+    "purescript-psa": "^0.8.0",
     "rimraf": "^2.6.2"
   }
 }
diff --git a/src/Foreign/Object/ST.purs b/src/Foreign/Object/ST.purs
index 030394e..19a6638 100644
--- a/src/Foreign/Object/ST.purs
+++ b/src/Foreign/Object/ST.purs
@@ -11,7 +11,7 @@ module Foreign.Object.ST
   , delete
   ) where
 
-import Control.Monad.ST (ST, kind Region)
+import Control.Monad.ST (ST, Region)
 import Data.Maybe (Maybe(..))
 
 -- | A reference to a mutable object