diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 43d2897..b6ebf3a 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: "unstable"
 
       - uses: actions/setup-node@v1
         with:
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 426a1c6..639da86 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,6 +5,7 @@ Notable changes to this project are documented in this file. The format is based
 ## [Unreleased]
 
 Breaking changes:
+- Update project and deps to PureScript v0.15.0 (#35 by @JordanMartinez)
 
 New features:
 
diff --git a/bower.json b/bower.json
index 58a9c3f..630359a 100644
--- a/bower.json
+++ b/bower.json
@@ -16,23 +16,23 @@
     "package.json"
   ],
   "dependencies": {
-    "purescript-either": "^5.0.0",
-    "purescript-foldable-traversable": "^5.0.0",
-    "purescript-identity": "^5.0.0",
-    "purescript-maybe": "^5.0.0",
-    "purescript-newtype": "^4.0.0",
-    "purescript-nonempty": "^6.0.0",
-    "purescript-prelude": "^5.0.0",
-    "purescript-tailrec": "^5.0.0",
-    "purescript-tuples": "^6.0.0",
-    "purescript-unfoldable": "^5.0.0"
+    "purescript-either": "master",
+    "purescript-foldable-traversable": "master",
+    "purescript-identity": "master",
+    "purescript-maybe": "master",
+    "purescript-newtype": "master",
+    "purescript-nonempty": "master",
+    "purescript-prelude": "master",
+    "purescript-tailrec": "master",
+    "purescript-tuples": "master",
+    "purescript-unfoldable": "master"
   },
   "devDependencies": {
-    "purescript-arrays": "^6.0.0",
-    "purescript-assert": "^5.0.0",
-    "purescript-console": "^5.0.0",
-    "purescript-lcg": "^3.0.0",
-    "purescript-math": "^3.0.0",
-    "purescript-transformers": "^5.0.0"
+    "purescript-arrays": "master",
+    "purescript-assert": "master",
+    "purescript-console": "master",
+    "purescript-lcg": "master",
+    "purescript-math": "master",
+    "purescript-transformers": "master"
   }
 }
diff --git a/package.json b/package.json
index 37a61f1..30a6ad0 100644
--- a/package.json
+++ b/package.json
@@ -7,8 +7,8 @@
   },
   "devDependencies": {
     "eslint": "^7.15.0",
-    "pulp": "^15.0.0",
-    "purescript-psa": "^0.8.0",
+    "pulp": "16.0.0-0",
+    "purescript-psa": "^0.8.2",
     "rimraf": "^3.0.2"
   }
 }
diff --git a/test/Frequency.purs b/test/Frequency.purs
index b563b2b..052ae52 100644
--- a/test/Frequency.purs
+++ b/test/Frequency.purs
@@ -4,7 +4,7 @@ import Prelude
 
 import Control.Monad.Gen (class MonadGen, frequency)
 import Control.Monad.State (State, class MonadState, get, put, evalStateT)
-import Data.Array (replicate, group', length)
+import Data.Array (replicate, groupAll, length)
 import Data.Array.NonEmpty (toNonEmpty)
 import Data.Newtype (unwrap)
 import Data.NonEmpty ((:|), NonEmpty(..))
@@ -52,7 +52,7 @@ check =
         ]
     abcArrGen = sequence $ replicate 200 abcGen
     abcArr = runTestGenFrequency abcArrGen `evalStateT` 0.0 # unwrap
-    actual = group' abcArr <#> \nea -> case toNonEmpty nea of
+    actual = groupAll abcArr <#> \nea -> case toNonEmpty nea of
       NonEmpty x xs -> Tuple (length xs + 1) x
     expected =
       [ (Tuple 10 "A")