diff --git a/.github/dependabot.yml b/.github/dependabot.yml
index e53bc08..7b09fe1 100644
--- a/.github/dependabot.yml
+++ b/.github/dependabot.yml
@@ -9,25 +9,29 @@ updates:
   - package-ecosystem: "github-actions"
     directory: "/"
     schedule:
-      interval: "weekly"
+      interval: "cron"
+      cronjob: "15 22 5,20 * *" # At 22:15, every 5th and 20th day of the month.
     open-pull-requests-limit: 5
     commit-message:
       prefix: "GH Actions:"
     labels:
       - "yoastcs/qa"
-    reviewers:
-      - "jrfnl"
+    groups:
+      action-runners:
+        applies-to: version-updates
+        update-types:
+          - "minor"
+          - "patch"
 
   # Maintain dependencies for Composer.
   - package-ecosystem: "composer"
     directory: "/"
     schedule:
-      interval: "weekly"
+      interval: "cron"
+      cronjob: "15 22 5,20 * *" # At 22:15, every 5th and 20th day of the month.
     open-pull-requests-limit: 5 # Set to 0 to (temporarily) disable.
     versioning-strategy: "increase-if-necessary"
     commit-message:
       prefix: "Composer:"
     labels:
       - "yoastcs/qa"
-    reviewers:
-      - "jrfnl"
diff --git a/.github/release-checklist.md b/.github/release-checklist.md
new file mode 100644
index 0000000..2eeb051
--- /dev/null
+++ b/.github/release-checklist.md
@@ -0,0 +1,30 @@
+Release checklist
+===========================================================
+
+## Pre-release
+
+- [ ] Composer: check if any dependencies/version constraints need updating - PR #xxx
+- [ ] Add changelog for the release - PR #xxx
+    :pencil2: Verify that a release link at the bottom of the `CHANGELOG.md` file has been added.
+
+## Release
+
+- [ ] Create PR to merge the `develop` branch into `main`.
+- [ ] Merge that PR
+- [ ] Make sure all CI builds are green.
+- [ ] Create a release from the tag (careful, GH defaults to `develop`!) & copy & paste the changelog to it.
+    Make sure to copy the links to the issues and the links to the GH usernames from the bottom of the changelog!
+- [ ] Close the milestone.
+- [ ] Open a new milestone for the next release.
+- [ ] If any open PRs/issues which were milestoned for the release did not make it into the release, update their milestone.
+
+## Announce
+
+- [ ] Tweet about the release.
+
+
+---
+
+Additional actions to take, not part of the release checklist:
+- [ ] Post a link to the release in the Yoast Slack.
+- [ ] Update the test dependencies in Yoast packages.
diff --git a/.github/workflows/cs.yml b/.github/workflows/cs.yml
index 184d2d5..d5740a5 100644
--- a/.github/workflows/cs.yml
+++ b/.github/workflows/cs.yml
@@ -8,25 +8,33 @@ on:
   workflow_dispatch:
 
 jobs:
+  actionlint:
+    name: 'Lint GH Action workflows'
+    uses: Yoast/.github/.github/workflows/reusable-actionlint.yml@c14f66005ab514663a48d00712db67617c98728c # v1.0.0
+
   checkcs:
     name: 'Basic CS and QA checks'
     runs-on: ubuntu-latest
 
     steps:
       - name: Checkout code
-        uses: actions/checkout@v4
+        uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6.0.1
+        with:
+          persist-credentials: false
 
       - name: Install PHP
-        uses: shivammathur/setup-php@v2
+        uses: shivammathur/setup-php@44454db4f0199b8b9685a5d763dc37cbf79108e1 # 2.36.0
         with:
-          php-version: '7.4'
+          php-version: 'latest'
           coverage: none
           tools: cs2pr
+        env:
+          fail-fast: true
 
       # Install dependencies and handle caching in one go.
-      # @link https://github.com/marketplace/actions/install-composer-dependencies
+      # @link https://github.com/marketplace/actions/install-php-dependencies-with-composer
       - name: Install Composer dependencies
-        uses: "ramsey/composer-install@v2"
+        uses: "ramsey/composer-install@3cf229dc2919194e9e36783941438d17239e8520" # 3.1.1
         with:
           # Bust the cache at least once a month - output format: YYYY-MM.
           custom-cache-suffix: $(date -u "+%Y-%m")
diff --git a/.github/workflows/merge-conflict-check.yml b/.github/workflows/merge-conflict-check.yml
new file mode 100644
index 0000000..1870754
--- /dev/null
+++ b/.github/workflows/merge-conflict-check.yml
@@ -0,0 +1,21 @@
+name: Check PRs for merge conflicts
+
+on:
+  # Check for new conflicts due to merges.
+  push:
+    branches:
+      - main
+      - develop
+  # Check conflicts in new PRs and for resolved conflicts due to an open PR being updated.
+  pull_request_target:
+    types:
+      - opened
+      - synchronize
+      - reopened
+
+jobs:
+  check-prs:
+    if: github.repository_owner == 'Yoast'
+
+    name: Check PRs for merge conflicts
+    uses: Yoast/.github/.github/workflows/reusable-merge-conflict-check.yml@c14f66005ab514663a48d00712db67617c98728c # v1.0.0
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index fc8e702..4b95606 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -19,45 +19,46 @@ jobs:
 
     strategy:
       matrix:
-        php: ['7.0', '7.1', '7.2', '7.3', '7.4', '8.0', '8.1', '8.3']
+        php: ['7.0', '7.1', '7.2', '7.3', '7.4', '8.0', '8.1', '8.2', '8.3', '8.4', '8.6']
         coverage: [false]
 
         # Run code coverage only on high/low PHP.
         include:
         - php: 5.6
           coverage: true
-        - php: 8.2
+        - php: 8.5
           coverage: true
 
-    continue-on-error: ${{ matrix.php == '8.3' }}
+    continue-on-error: ${{ matrix.php == '8.6' }}
 
     name: "Tests: PHP ${{ matrix.php }}"
 
     steps:
       - name: Checkout code
-        uses: actions/checkout@v4
+        uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6.0.1
+        with:
+          persist-credentials: false
 
       - name: Install PHP
-        uses: shivammathur/setup-php@v2
+        uses: shivammathur/setup-php@44454db4f0199b8b9685a5d763dc37cbf79108e1 # 2.36.0
         with:
           php-version: ${{ matrix.php }}
-          ini-values: error_reporting=E_ALL, display_errors=On
+          ini-values: zend.assertions=1, assert.exception=1, error_reporting=-1, display_errors=On, display_startup_errors=On
           coverage: ${{ matrix.coverage == true && 'xdebug' || 'none' }}
+        env:
+          fail-fast: true
 
-      # Install dependencies and handle caching in one go.
-      # @link https://github.com/marketplace/actions/install-composer-dependencies
-      - name: Install Composer dependencies - normal
-        if: matrix.php != '8.3'
-        uses: "ramsey/composer-install@v2"
-        with:
-          # Bust the cache at least once a month - output format: YYYY-MM.
-          custom-cache-suffix: $(date -u "+%Y-%m")
+      # YoastCS 3.0 has a PHP 7.2 minimum which conflicts with the requirements of this package.
+      - name: 'Composer: remove YoastCS'
+        run: composer remove --dev yoast/yoastcs --no-update --no-interaction
 
-      - name: Install Composer dependencies - ignore PHP restrictions
-        if: matrix.php == '8.3'
-        uses: "ramsey/composer-install@v2"
+      # Install dependencies and handle caching in one go.
+      # @link https://github.com/marketplace/actions/install-php-dependencies-with-composer
+      - name: Install Composer dependencies
+        uses: "ramsey/composer-install@3cf229dc2919194e9e36783941438d17239e8520" # 3.1.1
         with:
-          composer-options: --ignore-platform-req=php+
+          # For PHP "nightly", we need to install with ignore platform reqs as not all dependencies may allow it yet.
+          composer-options: ${{ matrix.php == '8.6' && '--ignore-platform-req=php+' || '' }}
           # Bust the cache at least once a month - output format: YYYY-MM.
           custom-cache-suffix: $(date -u "+%Y-%m")
 
@@ -72,34 +73,23 @@ jobs:
         if: ${{ matrix.coverage == true }}
         run: composer coverage
 
-      # PHP Coveralls doesn't fully support PHP 8.x yet, so switch the PHP version.
-      - name: Switch to PHP 7.4
-        if: ${{ success() && matrix.coverage == true && startsWith( matrix.php, '8' ) }}
-        uses: shivammathur/setup-php@v2
-        with:
-          php-version: 7.4
-          coverage: none
-
-      # Global install is used to prevent a conflict with the local composer.lock in PHP 8.0+.
-      - name: Install Coveralls
-        if: ${{ success() && matrix.coverage == true }}
-        run: composer global require php-coveralls/php-coveralls:"^2.5.3" --no-interaction
-
       - name: Upload coverage results to Coveralls
         if: ${{ success() && matrix.coverage == true }}
-        env:
-          COVERALLS_REPO_TOKEN: ${{ secrets.COVERALLS_TOKEN }}
-          COVERALLS_PARALLEL: true
-          COVERALLS_FLAG_NAME: php-${{ matrix.php }}
-        run: php-coveralls -v -x build/logs/clover.xml
+        uses: coverallsapp/github-action@5cbfd81b66ca5d10c19b062c04de0199c215fb6e # v2.3.7
+        with:
+          format: clover
+          file: build/logs/clover.xml
+          flag-name: php-${{ matrix.php }}
+          parallel: true
 
   coveralls-finish:
     needs: test
     runs-on: ubuntu-latest
 
+    name: Coveralls Finish
+
     steps:
       - name: Coveralls Finished
-        uses: coverallsapp/github-action@v2
+        uses: coverallsapp/github-action@5cbfd81b66ca5d10c19b062c04de0199c215fb6e # v2.3.7
         with:
-          github-token: ${{ secrets.COVERALLS_TOKEN }}
           parallel-finished: true
diff --git a/.phpcs.xml.dist b/.phpcs.xml.dist
index ff1e0a9..112b5d0 100644
--- a/.phpcs.xml.dist
+++ b/.phpcs.xml.dist
@@ -1,27 +1,27 @@
 <?xml version="1.0"?>
 <ruleset xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" name="Coding Standard for WP Test Utils" xsi:noNamespaceSchemaLocation="./vendor/squizlabs/php_codesniffer/phpcs.xsd">
-    <description>Check the code of WP Test Utils.</description>
+	<description>Check the code of WP Test Utils.</description>
 
-    <!--
-    #############################################################################
-    COMMAND LINE ARGUMENTS
-    https://github.com/squizlabs/PHP_CodeSniffer/wiki/Annotated-ruleset.xml
-    #############################################################################
-    -->
+	<!--
+	#############################################################################
+	COMMAND LINE ARGUMENTS
+	https://github.com/PHPCSStandards/PHP_CodeSniffer/wiki/Annotated-ruleset.xml
+	#############################################################################
+	-->
 
-    <file>.</file>
+	<file>.</file>
 
-    <!-- Only check PHP files. -->
-    <arg name="extensions" value="php"/>
+	<!-- Only check PHP files. -->
+	<arg name="extensions" value="php"/>
 
-    <!-- Show progress, show the error codes for each message (source). -->
-    <arg value="ps"/>
+	<!-- Show progress, show the error codes for each message (source). -->
+	<arg value="ps"/>
 
-    <!-- Strip the filepaths down to the relevant bit. -->
-    <arg name="basepath" value="./"/>
+	<!-- Strip the filepaths down to the relevant bit. -->
+	<arg name="basepath" value="./"/>
 
-    <!-- Check up to 8 files simultaneously. -->
-    <arg name="parallel" value="8"/>
+	<!-- Check up to 8 files simultaneously. -->
+	<arg name="parallel" value="8"/>
 
 	<!-- Cache the results between runs. -->
 	<arg name="cache" value="./.cache/phpcs.cache"/>
@@ -41,16 +41,33 @@
 			</property>
 		</properties>
 
-		<!-- Use CamelCaps file names to be more in line with the naming conventions used in PHPUnit. -->
-		<exclude name="Yoast.Files.FileName"/>
+		<!-- Exclude some rules which are irrelevant.
+			 The code in this package is not run in the context of a WordPress plugin. -->
+		<exclude name="WordPress.DB"/>
+		<exclude name="WordPress.Security"/>
+		<exclude name="WordPress.WP"/>
+		<exclude name="Yoast.Yoast.JsonEncodeAlternative"/>
+		<exclude name="WordPressVIPMinimum.Classes.DeclarationCompatibility"/>
+		<exclude name="WordPressVIPMinimum.Hooks.AlwaysReturnInFilter"/>
+		<exclude name="WordPressVIPMinimum.Security.EscapingVoidReturnFunctions"/>
+		<exclude name="WordPressVIPMinimum.Security.ProperEscapingFunction"/>
+
+		<!-- Exclude select "modern PHP" sniffs, which conflict with the minimum supported PHP version of this package. -->
+		<exclude name="Modernize.FunctionCalls.Dirname.Nested"/><!-- PHP 7.0+. -->
+		<exclude name="SlevomatCodingStandard.ControlStructures.RequireNullCoalesceOperator"/><!-- PHP 7.0+. -->
+		<exclude name="PSR12.Properties.ConstantVisibility"/><!-- PHP 7.1+. -->
+		<exclude name="SlevomatCodingStandard.TypeHints.NullableTypeForNullDefaultValue"/><!-- PHP 7.1+. -->
+		<exclude name="SlevomatCodingStandard.Functions.RequireTrailingCommaInCall"/><!-- PHP 7.3+. -->
+		<exclude name="SlevomatCodingStandard.ControlStructures.RequireNullCoalesceEqualOperator"/><!-- PHP 7.4+. -->
+		<exclude name="SlevomatCodingStandard.Numbers.RequireNumericLiteralSeparator"/><!-- PHP 7.4+. -->
 
-		<!-- The code in this package is not run in the context of a plugin. -->
-		<exclude name="WordPress.WP.AlternativeFunctions"/>
-		<exclude name="Yoast.Yoast.AlternativeFunctions"/>
 	</rule>
 
 	<!-- Enforce PSR1 compatible namespaces. -->
-	<rule ref="PSR1.Classes.ClassDeclaration"/>
+	<rule ref="PSR1.Classes.ClassDeclaration">
+		<!-- YoastCS only applies this rule to test files. Overrule it to apply to all files. -->
+		<include-pattern>*\.php</include-pattern>
+	</rule>
 
 
 	<!--
@@ -59,13 +76,21 @@
 	#############################################################################
 	-->
 
-	<rule ref="Yoast.NamingConventions.NamespaceName">
+	<rule ref="Yoast.Files.FileName">
 		<properties>
-			<property name="prefixes" type="array">
-				<element value="Yoast\WPTestUtils"/>
+			<property name="psr4_paths" type="array">
+				<element key="Yoast\WPTestUtils\Tests\\" value="tests/"/>
 			</property>
-			<property name="src_directory" type="array">
-				<element value="src"/>
+		</properties>
+
+		<include-pattern>/tests/*\.php</include-pattern>
+	</rule>
+
+	<rule ref="Yoast.NamingConventions.NamespaceName">
+		<properties>
+			<property name="psr4_paths" type="array">
+				<element key="Yoast\WPTestUtils\\" value="src/"/>
+				<element key="Yoast\WPTestUtils\Tests\\" value="tests/"/>
 			</property>
 		</properties>
 	</rule>
@@ -78,7 +103,7 @@
 
 	<rule ref="WordPress.PHP.NoSilencedErrors">
 		<properties>
-			<property name="custom_whitelist" type="array">
+			<property name="customAllowedFunctionsList" type="array">
 				<element value="file_exists"/>
 			</property>
 		</properties>
@@ -92,11 +117,6 @@
 	#############################################################################
 	-->
 
-	<!-- Allow filecomments in file which don't contain OO declarations. -->
-	<rule ref="Yoast.Commenting.FileComment.Unnecessary">
-		<exclude-pattern>/src/*/bootstrap*\.php$</exclude-pattern>
-	</rule>
-
 	<!-- Declaring a few WordPress native constants. -->
 	<rule ref="WordPress.NamingConventions.PrefixAllGlobals.NonPrefixedConstantFound">
 		<exclude-pattern>/src/BrainMonkey/bootstrap\.php$</exclude-pattern>
@@ -116,9 +136,16 @@
 		<exclude-pattern>/src/Helpers/*\.php$</exclude-pattern>
 	</rule>
 
-	<!-- Ignore word count for object names in tests. -->
+	<!-- TEST CODE -->
+
+	<!-- Final classes is irrelevant for test fixtures. -->
+	<rule ref="Universal.Classes.RequireFinalClass">
+		<exclude-pattern>/tests/*/Fixtures/*\.php$</exclude-pattern>
+	</rule>
+
+	<!-- Ignore word count for object names in test fixtures. -->
 	<rule ref="Yoast.NamingConventions.ObjectNameDepth.MaxExceeded">
-		<exclude-pattern>/tests/*\.php$</exclude-pattern>
+		<exclude-pattern>/tests/*/Fixtures/*\.php$</exclude-pattern>
 	</rule>
 
 	<!-- Test fixtures are not the actual tests. -->
diff --git a/CHANGELOG.md b/CHANGELOG.md
index d8d9b0b..335ace3 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -9,11 +9,24 @@ This projects adheres to [Keep a CHANGELOG](http://keepachangelog.com/) and uses
 
 _Nothing yet._
 
+## [1.2.1] - 2026-02-05
+
+### Changed
+* The [PHPUnit Polyfills] dependency has been updated to require [version `^1.1.5`](https://github.com/Yoast/PHPUnit-Polyfills/releases/tag/1.1.5) (was `^1.1.0`). PRs [#75], [#101]
+* The [BrainMonkey] dependency has been updated to require [version `^2.7.0`](https://github.com/Brain-WP/BrainMonkey/releases/tag/2.7.0) (was `^2.6.1`). PRs [#79], [#102]
+* Verified PHP 8.4 and 8.5 compatibility.
+* General housekeeping.
+
+[#75]: https://github.com/Yoast/wp-test-utils/pull/75
+[#79]: https://github.com/Yoast/wp-test-utils/pull/79
+[#101]: https://github.com/Yoast/wp-test-utils/pull/101
+[#102]: https://github.com/Yoast/wp-test-utils/pull/102
+
+
 ## [1.2.0] - 2023-09-27
 
 ### Added
-
-* Support for the new PHPUnit `assertObjectHasProperty()` and `assertObjectNotHasProperty()` assertions, as polyfilled via the PHPUnit Polyfills in all test cases. PR [#64]
+* Support for the new PHPUnit `assertObjectHasProperty()` and `assertObjectNotHasProperty()` assertions, as polyfilled via the [PHPUnit Polyfills] in all test cases. PR [#64]
     This means that the `assertObjectHasProperty()` and `assertObjectNotHasProperty()` assertions can now safely be used in all tests in classes which extend one of the WP Test Utils TestCases.
 
 ### Changed
diff --git a/README.md b/README.md
index 0bf1acc..bdae241 100644
--- a/README.md
+++ b/README.md
@@ -1,13 +1,13 @@
 WP Test Utils
 =====================================================
 
-[![Version](https://poser.pugx.org/yoast/wp-test-utils/version)](https://packagist.org/packages/yoast/wp-test-utils)
+[![Version](https://img.shields.io/packagist/v/yoast/wp-test-utils)](https://packagist.org/packages/yoast/wp-test-utils)
 [![CS Build Status](https://github.com/Yoast/wp-test-utils/actions/workflows/cs.yml/badge.svg)](https://github.com/Yoast/wp-test-utils/actions/workflows/cs.yml)
 [![Test Build Status](https://github.com/Yoast/wp-test-utils/actions/workflows/test.yml/badge.svg)](https://github.com/Yoast/wp-test-utils/actions/workflows/test.yml)
 [![Coverage Status](https://coveralls.io/repos/github/Yoast/wp-test-utils/badge.svg?branch=develop)](https://coveralls.io/github/Yoast/wp-test-utils?branch=develop)
 
 [![Minimum PHP Version](https://img.shields.io/packagist/php-v/yoast/wp-test-utils.svg?maxAge=3600)](https://packagist.org/packages/yoast/wp-test-utils)
-[![License: BSD3](https://poser.pugx.org/yoast/wp-test-utils/license)](https://github.com/Yoast/wp-test-utils/blob/main/LICENSE)
+[![License: BSD3](https://img.shields.io/packagist/l/yoast/wp-test-utils)](https://github.com/Yoast/wp-test-utils/blob/main/LICENSE)
 
 This library contains a set of utilities for running automated tests for WordPress plugins and themes.
 
@@ -35,9 +35,9 @@ Requirements
 * PHP 5.6 or higher.
 
 The following packages will be automatically required via Composer:
-* [PHPUnit Polyfills] 1.1.0 or higher.
+* [PHPUnit Polyfills] 1.1.5 or higher.
 * [PHPUnit] 5.7 - 9.x.
-* [BrainMonkey] 2.6.1 or higher.
+* [BrainMonkey] 2.7.0 or higher.
 
 
 Installation
diff --git a/composer.json b/composer.json
index b15ffa3..5f73896 100644
--- a/composer.json
+++ b/composer.json
@@ -24,15 +24,18 @@
 	"homepage": "https://github.com/Yoast/wp-test-utils/",
 	"support": {
 		"issues": "https://github.com/Yoast/wp-test-utils/issues",
-		"source": "https://github.com/Yoast/wp-test-utils"
+		"source": "https://github.com/Yoast/wp-test-utils",
+		"security": "https://github.com/Yoast/wp-test-utils/security/policy"
 	},
 	"require": {
 		"php": ">=5.6",
-		"brain/monkey": "^2.6.1",
-		"yoast/phpunit-polyfills": "^1.1.0"
+		"brain/monkey": "^2.7.0",
+		"yoast/phpunit-polyfills": "^1.1.5"
 	},
 	"require-dev": {
-		"yoast/yoastcs": "^2.3.1"
+		"php-parallel-lint/php-console-highlighter": "^1.0.0",
+		"php-parallel-lint/php-parallel-lint": "^1.4.0",
+		"yoast/yoastcs": "^3.3.0"
 	},
 	"minimum-stability": "dev",
 	"prefer-stable": true,
@@ -53,7 +56,8 @@
 	"config": {
 		"allow-plugins": {
 			"dealerdirect/phpcodesniffer-composer-installer": true
-		}
+		},
+		"lock": false
 	},
 	"extra": {
 		"branch-alias": {
diff --git a/src/BrainMonkey/TestCase.php b/src/BrainMonkey/TestCase.php
index e1d67cf..983e851 100644
--- a/src/BrainMonkey/TestCase.php
+++ b/src/BrainMonkey/TestCase.php
@@ -81,10 +81,10 @@ public function stubTranslationFunctions() {
 			[
 				'__'         => null,
 				'_x'         => null,
-				'_n'         => static function( $single, $plural, $number ) {
+				'_n'         => static function ( $single, $plural, $number ) {
 					return ( $number === 1 ) ? $single : $plural;
 				},
-				'_nx'        => static function( $single, $plural, $number ) {
+				'_nx'        => static function ( $single, $plural, $number ) {
 					return ( $number === 1 ) ? $single : $plural;
 				},
 				'translate'  => null,
@@ -198,7 +198,7 @@ public static function makeDoubleForUnavailableClass( $class_name ) {
 	 *
 	 * @see TestCase::makeDoubleForUnavailableClass()
 	 *
-	 * @param string[] $class_names List of class names to be "faked".
+	 * @param array<string> $class_names List of class names to be "faked".
 	 *
 	 * @return void
 	 */
diff --git a/src/BrainMonkey/YoastTestCase.php b/src/BrainMonkey/YoastTestCase.php
index 113a332..167b0f7 100644
--- a/src/BrainMonkey/YoastTestCase.php
+++ b/src/BrainMonkey/YoastTestCase.php
@@ -24,7 +24,7 @@ protected function set_up() {
 		Monkey\Functions\stubs(
 			[
 				// Passing "null" makes the function return it's first argument.
-				'get_bloginfo'         => static function( $show ) {
+				'get_bloginfo'         => static function ( $show ) {
 					switch ( $show ) {
 						case 'charset':
 							return 'UTF-8';
@@ -34,14 +34,14 @@ protected function set_up() {
 
 					return $show;
 				},
-				'is_multisite'         => static function() {
+				'is_multisite'         => static function () {
 					if ( \defined( 'WP_TESTS_MULTISITE' ) ) {
 						return (bool) \WP_TESTS_MULTISITE;
 					}
 
 					return false;
 				},
-				'mysql2date'           => static function( $format, $date ) {
+				'mysql2date'           => static function ( $format, $date ) {
 					return $date;
 				},
 				'number_format_i18n'   => null,
@@ -51,7 +51,7 @@ protected function set_up() {
 				'wp_parse_args'        => static function ( $args, $defaults ) {
 					return \array_merge( $defaults, $args );
 				},
-				'wp_strip_all_tags'    => static function( $text, $remove_breaks = false ) {
+				'wp_strip_all_tags'    => static function ( $text, $remove_breaks = false ) {
 					$text = \preg_replace( '@<(script|style)[^>]*?>.*?</\\1>@si', '', $text );
 					$text = \strip_tags( $text );
 
@@ -62,7 +62,7 @@ protected function set_up() {
 					return \trim( $text );
 				},
 				'wp_slash'             => null,
-				'wp_unslash'           => static function( $value ) {
+				'wp_unslash'           => static function ( $value ) {
 					return \is_string( $value ) ? \stripslashes( $value ) : $value;
 				},
 			]
diff --git a/src/BrainMonkey/bootstrap.php b/src/BrainMonkey/bootstrap.php
index 96c41f2..56d3063 100644
--- a/src/BrainMonkey/bootstrap.php
+++ b/src/BrainMonkey/bootstrap.php
@@ -39,7 +39,7 @@
  *
  * @see TestCase::makeDoubleForUnavailableClass()
  *
- * @param string[] $class_names List of class names to be "faked".
+ * @param array<string> $class_names List of class names to be "faked".
  *
  * @return void
  */
diff --git a/src/WPIntegration/TestCaseNoPolyfills.php b/src/WPIntegration/TestCaseNoPolyfills.php
index 5a2499f..b17be10 100644
--- a/src/WPIntegration/TestCaseNoPolyfills.php
+++ b/src/WPIntegration/TestCaseNoPolyfills.php
@@ -26,5 +26,4 @@
 abstract class TestCase extends WP_UnitTestCase {
 
 	use ExpectOutputHelper;
-
 }
diff --git a/src/WPIntegration/bootstrap-functions.php b/src/WPIntegration/bootstrap-functions.php
index f934a6a..282dd32 100644
--- a/src/WPIntegration/bootstrap-functions.php
+++ b/src/WPIntegration/bootstrap-functions.php
@@ -42,7 +42,7 @@ function get_path_to_wp_test_dir() {
 	 *
 	 * @return string The file path with normalized slashes.
 	 */
-	$normalize_path = static function( $path ) {
+	$normalize_path = static function ( $path ) {
 		return \str_replace( '\\', '/', $path );
 	};