diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 063845e..2e4c7a1 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -13,6 +13,8 @@ jobs:
       - uses: actions/checkout@v2
 
       - uses: purescript-contrib/setup-purescript@main
+        with:
+          purescript: "0.14.0-rc3"
 
       - uses: actions/setup-node@v1
         with:
diff --git a/bower.json b/bower.json
index 8ad79dc..ad591f0 100644
--- a/bower.json
+++ b/bower.json
@@ -12,6 +12,6 @@
     "url": "git://github.com/purescript-node/purescript-node-url.git"
   },
   "dependencies": {
-    "purescript-nullable": "^4.0.0"
+    "purescript-nullable": "main"
   }
 }