diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 8500fca..5cc57a1 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -16,6 +16,7 @@ jobs:
       - name: Set up a PureScript toolchain
         uses: purescript-contrib/setup-purescript@main
         with:
+          purescript: "unstable"
           purs-tidy: "latest"
 
       - name: Cache PureScript dependencies
@@ -35,8 +36,17 @@ jobs:
       - name: Install dev dependencies
         run: spago -x spago-dev.dhall install
 
-      - name: Run tests
-        run: spago -x spago-dev.dhall test --no-install
+#      - name: Run tests
+#        run: spago -x spago-dev.dhall test --no-install
 
       - name: Check formatting
         run: purs-tidy check src test bench
+
+      - name: Verify Bower & Pulp
+        run: |
+          npm install bower pulp@16.0.0-0
+          npx bower install
+          npx pulp build -- --censor-lib --strict
+          if [ -d "test" ]; then
+            npx pulp test
+          fi
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 376057d..37f2fa7 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,6 +5,8 @@ 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 (#160 by @JordanMartinez)
+- Drop deprecated `MonadZero` instance (#160 by @JordanMartinez)
 
 New features:
 
diff --git a/bower.json b/bower.json
index 7cb6c39..c0680b7 100644
--- a/bower.json
+++ b/bower.json
@@ -1,38 +1,41 @@
 {
-    "name": "purescript-parsing",
-    "license": [
-        "BSD-2-Clause"
-    ],
-    "repository": {
-        "type": "git",
-        "url": "https://github.com/purescript-contrib/purescript-parsing.git"
-    },
-    "ignore": [
-        "**/.*",
-        "node_modules",
-        "bower_components",
-        "output"
-    ],
-    "dependencies": {
-        "purescript-arrays": "^v6.0.1",
-        "purescript-control": "^v5.0.0",
-        "purescript-either": "^v5.0.0",
-        "purescript-foldable-traversable": "^v5.0.1",
-        "purescript-identity": "^v5.0.0",
-        "purescript-integers": "^v5.0.0",
-        "purescript-lists": "^v6.0.1",
-        "purescript-math": "^v3.0.0",
-        "purescript-maybe": "^v5.0.0",
-        "purescript-newtype": "^v4.0.0",
-        "purescript-numbers": "^v8.0.0",
-        "purescript-prelude": "^v5.0.1",
-        "purescript-record": "^v3.0.0",
-        "purescript-strings": "^v5.0.0",
-        "purescript-tailrec": "^v5.0.1",
-        "purescript-transformers": "^v5.1.0",
-        "purescript-tuples": "^v6.0.1",
-        "purescript-unfoldable": "^v5.0.0",
-        "purescript-unicode": "^v5.0.0",
-        "purescript-unsafe-coerce": "^v5.0.0"
-    }
+  "name": "purescript-parsing",
+  "license": [
+    "BSD-2-Clause"
+  ],
+  "repository": {
+    "type": "git",
+    "url": "https://github.com/purescript-contrib/purescript-parsing.git"
+  },
+  "ignore": [
+    "**/.*",
+    "node_modules",
+    "bower_components",
+    "output"
+  ],
+  "dependencies": {
+    "purescript-arrays": "master",
+    "purescript-control": "master",
+    "purescript-either": "master",
+    "purescript-foldable-traversable": "master",
+    "purescript-identity": "master",
+    "purescript-integers": "master",
+    "purescript-lists": "master",
+    "purescript-math": "master",
+    "purescript-maybe": "master",
+    "purescript-newtype": "master",
+    "purescript-numbers": "master",
+    "purescript-prelude": "master",
+    "purescript-record": "master",
+    "purescript-strings": "master",
+    "purescript-tailrec": "master",
+    "purescript-transformers": "master",
+    "purescript-tuples": "master",
+    "purescript-unfoldable": "master",
+    "purescript-unicode": "main",
+    "purescript-unsafe-coerce": "master"
+  },
+  "devDependencies": {
+    "purescript-assert": "master"
+  }
 }
diff --git a/packages.dhall b/packages.dhall
index 7a6905b..582d6d3 100644
--- a/packages.dhall
+++ b/packages.dhall
@@ -1,4 +1,4 @@
 let upstream =
-      https://github.com/purescript/package-sets/releases/download/psc-0.14.3-20210722/packages.dhall sha256:1ceb43aa59436bf5601bac45f6f3781c4e1f0e4c2b8458105b018e5ed8c30f8c
+      https://raw.githubusercontent.com/purescript/package-sets/prepare-0.15/src/packages.dhall
 
 in  upstream
diff --git a/src/Text/Parsing/Parser.purs b/src/Text/Parsing/Parser.purs
index 69796f0..527ae1d 100644
--- a/src/Text/Parsing/Parser.purs
+++ b/src/Text/Parsing/Parser.purs
@@ -26,7 +26,7 @@ import Control.Monad.Except (class MonadError, ExceptT(..), mapExceptT, runExcep
 import Control.Monad.Rec.Class (class MonadRec)
 import Control.Monad.State (class MonadState, StateT(..), evalStateT, gets, mapStateT, modify_, runStateT)
 import Control.Monad.Trans.Class (class MonadTrans, lift)
-import Control.MonadPlus (class Alternative, class MonadPlus, class MonadZero, class Plus)
+import Control.MonadPlus (class Alternative, class MonadPlus, class Plus)
 import Data.Either (Either(..))
 import Data.Identity (Identity)
 import Data.Newtype (class Newtype, over, unwrap)
@@ -139,7 +139,7 @@ derive newtype instance monadErrorParserT :: Monad m => MonadError ParseError (P
 -- |
 -- | If we read a file from disk and run this `fileParser` on it and the
 -- | `string "<html>"` parser succeeds, then we know that the first branch
--- | is the correct branch, so we want to commit to the first branch. 
+-- | is the correct branch, so we want to commit to the first branch.
 -- | Even if the `parseTheRestOfTheHtml` parser fails
 -- | we don’t want to try the second branch.
 -- |
@@ -164,8 +164,6 @@ instance plusParserT :: Monad m => Plus (ParserT s m) where
 
 instance alternativeParserT :: Monad m => Alternative (ParserT s m)
 
-instance monadZeroParserT :: Monad m => MonadZero (ParserT s m)
-
 instance monadPlusParserT :: Monad m => MonadPlus (ParserT s m)
 
 instance monadTransParserT :: MonadTrans (ParserT s) where