diff --git a/.checkstyle.xml b/.checkstyle.xml
index 60160219..2d861eef 100644
--- a/.checkstyle.xml
+++ b/.checkstyle.xml
@@ -1,19 +1,18 @@
 <?xml version="1.0"?>
 <!DOCTYPE module PUBLIC
-        "-//Puppy Crawl//DTD Check Configuration 1.3//EN"
-        "http://www.puppycrawl.com/dtds/configuration_1_3.dtd">
+        "-//Checkstyle//DTD Checkstyle Configuration 1.3//EN"
+        "https://checkstyle.org/dtds/configuration_1_3.dtd">
 <!--
- In order to be compatible with CodeClimate, we have to stay in sync with the version of Checkstyle that they are using.
- It doesn't seem to be updated much by default, but we can specify a channel, which is currently using 10.7.0.
- Check the links below to get up-to-date version information.
- https://github.com/codeclimate/codeclimate-checkstyle/branches/all (channel/ branches)
- https://docs.codeclimate.com/docs/checkstyle
- https://github.com/codeclimate/codeclimate-checkstyle/blob/master/bin/install-checkstyle.sh
+ In order to be compatible with Megalint, we have to stay in sync with the version of Checkstyle that they are using.
+ This is, at the time of writing, 10.25.0. Check the documentation to get up-to-date version information:
+   https://megalinter.io/8.8.0/descriptors/java_checkstyle/
+ The output of the GitHub Action also reports the Checkstyle version:
+   https://github.com/AuthMe/ConfigMe/actions/workflows/mega-linter.yml?query=branch%3Amaster
 -->
 
 <module name="Checker">
     <property name="charset" value="UTF-8" />
-    <property name="severity" value="warning" />
+    <property name="severity" value="error" />
     <property name="fileExtensions" value="java" />
 
     <module name="SuppressWarningsFilter" />
@@ -147,7 +146,7 @@
         <module name="JavadocTagContinuationIndentation" />
         <module name="JavadocType" />
         <module name="JavadocVariable">
-            <property name="scope" value="package" />
+            <property name="accessModifiers" value="package" />
         </module>
         <module name="MissingJavadocMethod">
             <property name="scope" value="package" />
diff --git a/.codeclimate.yml b/.codeclimate.yml
deleted file mode 100644
index a7915032..00000000
--- a/.codeclimate.yml
+++ /dev/null
@@ -1,39 +0,0 @@
-version: '2' # required to adjust maintainability checks
-
-plugins:
-  checkstyle:
-    enabled: true
-    channel: 'checkstyle-10-7-0'
-    config:
-      file: '.checkstyle.xml'
-
-checks:
-  # We disable all the following CodeClimate checks: Checkstyle already checks for these things and has the advantage
-  # that the Checkstyle config can also be used in one's IDE.
-  argument-count:
-    enabled: false
-  complex-logic:
-    enabled: false
-  file-lines:
-    enabled: false
-  method-complexity:
-    enabled: false
-  method-count:
-    enabled: false
-  method-lines:
-    enabled: false
-  nested-control-flow:
-    enabled: false
-  return-statements:
-    enabled: false
-
-  # No Checkstyle equivalent, but it keeps reporting false positives because of similar constructors and imports
-  similar-code:
-    enabled: false
-  # No Checkstyle equivalent, so enabled as long as it's not full of false positives
-  identical-code:
-    enabled: true
-
-exclude_patterns:
-  # Don't check test scope
-  - 'src/test/java/**'
diff --git a/.config/yamllint.yml b/.config/yamllint.yml
new file mode 100644
index 00000000..51cce04c
--- /dev/null
+++ b/.config/yamllint.yml
@@ -0,0 +1,8 @@
+rules:
+  line-length:
+    max: 120
+
+  # GitHub Actions use 'on' as key in their config, which hits the "truthy" check. Disable it.
+  # https://github.com/adrienverge/yamllint/issues/430
+  truthy:
+    check-keys: false
diff --git a/.github/workflows/mega-linter.yml b/.github/workflows/mega-linter.yml
new file mode 100644
index 00000000..e8522abf
--- /dev/null
+++ b/.github/workflows/mega-linter.yml
@@ -0,0 +1,192 @@
+# MegaLinter GitHub Action configuration file
+# More info at https://megalinter.io
+---
+name: MegaLinter
+
+# Trigger mega-linter at every push. Action will also be visible from
+# Pull Requests to master
+on:
+  # Comment this line to trigger action only on pull-requests
+  # (not recommended if you don't pay for GH Actions)
+  push:
+
+  pull_request:
+    branches:
+      - master
+
+# Permissions. Depending on config, contents: write, issues: write and pull-requests: write should be added
+permissions:
+  contents: read
+  pull-requests: write
+
+# Comment env block if you do not want to apply fixes
+env:
+  # Apply linter fixes configuration
+  #
+  # When active, APPLY_FIXES must also be defined as environment variable
+  # (in github/workflows/mega-linter.yml or other CI tool)
+  APPLY_FIXES: none
+
+  # Decide which event triggers application of fixes in a commit or a PR
+  # (pull_request, push, all)
+  APPLY_FIXES_EVENT: pull_request
+
+  # If APPLY_FIXES is used, defines if the fixes are directly committed (commit)
+  # or posted in a PR (pull_request)
+  APPLY_FIXES_MODE: commit
+
+concurrency:
+  group: ${{ github.ref }}-${{ github.workflow }}
+  cancel-in-progress: true
+
+jobs:
+  megalinter:
+    name: MegaLinter
+    runs-on: ubuntu-latest
+
+    steps:
+      # Git Checkout
+      - name: Checkout Code
+        uses: actions/checkout@v4
+        with:
+          token: ${{ secrets.PAT || secrets.GITHUB_TOKEN }}
+
+          # If you use VALIDATE_ALL_CODEBASE = true, you can remove this line to
+          # improve performance
+          fetch-depth: 0
+
+      # MegaLinter
+      - name: MegaLinter
+
+        # You can override MegaLinter flavor used to have faster performances
+        # More info at https://megalinter.io/latest/flavors/
+        uses: oxsecurity/megalinter/flavors/java@v8
+
+        id: ml
+
+        # All available variables are described in documentation
+        # https://megalinter.io/latest/config-file/
+        env:
+          # Validates all source when push on master, else just the git diff with
+          # master. Override with true if you always want to lint all sources
+          #
+          # To validate the entire codebase, set to:
+          # VALIDATE_ALL_CODEBASE: true
+          #
+          # To validate only diff with master, set to:
+          # VALIDATE_ALL_CODEBASE: >-
+          #   ${{
+          #     github.event_name == 'push' &&
+          #     github.ref == 'refs/heads/master'
+          #   }}
+          VALIDATE_ALL_CODEBASE: true
+
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+
+          # Uncomment to use ApiReporter (Grafana)
+          # API_REPORTER: true
+          # API_REPORTER_URL: ${{ secrets.API_REPORTER_URL }}
+          # API_REPORTER_BASIC_AUTH_USERNAME: ${{ secrets.API_REPORTER_BASIC_AUTH_USERNAME }}
+          # API_REPORTER_BASIC_AUTH_PASSWORD: ${{ secrets.API_REPORTER_BASIC_AUTH_PASSWORD }}
+          # API_REPORTER_METRICS_URL: ${{ secrets.API_REPORTER_METRICS_URL }}
+          # API_REPORTER_METRICS_BASIC_AUTH_USERNAME: ${{ secrets.API_REPORTER_METRICS_BASIC_AUTH_USERNAME }}
+          # API_REPORTER_METRICS_BASIC_AUTH_PASSWORD: ${{ secrets.API_REPORTER_METRICS_BASIC_AUTH_PASSWORD }}
+          # API_REPORTER_DEBUG: false
+
+          # ADD YOUR CUSTOM ENV VARIABLES HERE TO OVERRIDE VALUES OF
+          # .mega-linter.yml AT THE ROOT OF YOUR REPOSITORY
+
+      # Upload MegaLinter artifacts
+      - name: Archive production artifacts
+        uses: actions/upload-artifact@v4
+        if: success() || failure()
+        with:
+          name: MegaLinter reports
+          include-hidden-files: "true"
+          path: |
+            megalinter-reports
+            mega-linter.log
+
+      # Create pull request if applicable
+      # (for now works only on PR from same repository, not from forks)
+      - name: Create Pull Request with applied fixes
+        uses: peter-evans/create-pull-request@v6
+        id: cpr
+        if: >-
+          steps.ml.outputs.has_updated_sources == 1 &&
+          (
+            env.APPLY_FIXES_EVENT == 'all' ||
+            env.APPLY_FIXES_EVENT == github.event_name
+          ) &&
+          env.APPLY_FIXES_MODE == 'pull_request' &&
+          (
+            github.event_name == 'push' ||
+            github.event.pull_request.head.repo.full_name == github.repository
+          ) &&
+          !contains(github.event.head_commit.message, 'skip fix')
+        with:
+          token: ${{ secrets.PAT || secrets.GITHUB_TOKEN }}
+          commit-message: "[MegaLinter] Apply linters automatic fixes"
+          title: "[MegaLinter] Apply linters automatic fixes"
+          labels: bot
+
+      - name: Create PR output
+        if: >-
+          steps.ml.outputs.has_updated_sources == 1 &&
+          (
+            env.APPLY_FIXES_EVENT == 'all' ||
+            env.APPLY_FIXES_EVENT == github.event_name
+          ) &&
+          env.APPLY_FIXES_MODE == 'pull_request' &&
+          (
+            github.event_name == 'push' ||
+            github.event.pull_request.head.repo.full_name == github.repository
+          ) &&
+          !contains(github.event.head_commit.message, 'skip fix')
+        run: |
+          echo "PR Number - ${{ steps.cpr.outputs.pull-request-number }}"
+          echo "PR URL - ${{ steps.cpr.outputs.pull-request-url }}"
+
+      # Push new commit if applicable
+      # (for now works only on PR from same repository, not from forks)
+      - name: Prepare commit
+        if: >-
+          steps.ml.outputs.has_updated_sources == 1 &&
+          (
+            env.APPLY_FIXES_EVENT == 'all' ||
+            env.APPLY_FIXES_EVENT == github.event_name
+          ) &&
+          env.APPLY_FIXES_MODE == 'commit' &&
+          github.ref != 'refs/heads/master' &&
+          (
+            github.event_name == 'push' ||
+            github.event.pull_request.head.repo.full_name == github.repository
+          ) &&
+          !contains(github.event.head_commit.message, 'skip fix')
+        run: sudo chown -Rc $UID .git/
+
+      - name: Commit and push applied linter fixes
+        uses: stefanzweifel/git-auto-commit-action@v5
+        if: >-
+          steps.ml.outputs.has_updated_sources == 1 &&
+          (
+            env.APPLY_FIXES_EVENT == 'all' ||
+            env.APPLY_FIXES_EVENT == github.event_name
+          ) &&
+          env.APPLY_FIXES_MODE == 'commit' &&
+          github.ref != 'refs/heads/master' &&
+          (
+            github.event_name == 'push' ||
+            github.event.pull_request.head.repo.full_name == github.repository
+          ) &&
+          !contains(github.event.head_commit.message, 'skip fix')
+        with:
+          branch: >-
+            ${{
+              github.event.pull_request.head.ref ||
+              github.head_ref ||
+              github.ref
+            }}
+          commit_message: "[MegaLinter] Apply linters fixes"
+          commit_user_name: megalinter-bot
+          commit_user_email: 129584137+megalinter-bot@users.noreply.github.com
diff --git a/.gitignore b/.gitignore
index 38588393..9ddf3a55 100644
--- a/.gitignore
+++ b/.gitignore
@@ -109,3 +109,5 @@ nb-configuration.xml
 ### Git ###
 # Don't exclude the .gitignore itself
 !.gitignore
+
+megalinter-reports/
diff --git a/.idea/checkstyle-idea.xml b/.idea/checkstyle-idea.xml
index 250d7843..223fce8b 100644
--- a/.idea/checkstyle-idea.xml
+++ b/.idea/checkstyle-idea.xml
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project version="4">
   <component name="CheckStyle-IDEA" serialisationVersion="2">
-    <checkstyleVersion>10.7.0</checkstyleVersion>
+    <checkstyleVersion>10.25.1</checkstyleVersion>
     <scanScope>JavaOnly</scanScope>
     <suppressErrors>true</suppressErrors>
     <copyLibs>true</copyLibs>
diff --git a/.mega-linter.yml b/.mega-linter.yml
new file mode 100644
index 00000000..842ba287
--- /dev/null
+++ b/.mega-linter.yml
@@ -0,0 +1,37 @@
+# Configuration file for MegaLinter
+#
+# See all available variables at https://megalinter.io/latest/config-file/ and in
+# linters documentation
+
+# all, none, or list of linter keys
+APPLY_FIXES: none
+PRINT_ALPACA: false
+
+# See https://megalinter.io/8.8.0/flavors/java/ for a list of linters
+DISABLE_LINTERS:
+  - COPYPASTE_JSCPD
+  - EDITORCONFIG_EDITORCONFIG_CHECKER
+  - JAVA_PMD
+  - JSON_V8R
+  - JSON_JSONLINT
+  - JSON_PRETTIER
+  - SPELL_CSPELL
+  - SPELL_LYCHEE
+  - XML_XMLLINT
+  - YAML_PRETTIER
+
+# Exclude test files - some are intentionally badly formatted, some produce encoding issues, etc.
+YAML_FILTER_REGEX_EXCLUDE: 'src/test/.*'
+YAML_YAMLLINT_CONFIG_FILE: '.config/yamllint.yml'
+# YAML lint errors shouldn't mark the MegaLinter action as failed
+YAML_YAMLLINT_DISABLE_ERRORS: true
+
+# Markdown lint errors shouldn't mark the MegaLinter action as failed
+MARKDOWN_MARKDOWNLINT_DISABLE_ERRORS: true
+
+# https://megalinter.io/8.8.0/descriptors/java_checkstyle/
+JAVA_CHECKSTYLE_CONFIG_FILE: '.checkstyle.xml'
+JAVA_CHECKSTYLE_FILTER_REGEX_INCLUDE: 'src/main'
+
+# Uncomment if you want MegaLinter to detect errors but not block CI to pass
+# DISABLE_ERRORS: true
diff --git a/README.md b/README.md
index df2160e3..c9d0e977 100644
--- a/README.md
+++ b/README.md
@@ -2,7 +2,7 @@
 [![Build Status](https://github.com/AuthMe/ConfigMe/actions/workflows/maven_jdk8.yml/badge.svg)](https://github.com/AuthMe/ConfigMe/actions?query=branch%3Amaster)
 [![Coverage Status](https://coveralls.io/repos/github/AuthMe/ConfigMe/badge.svg?branch=master)](https://coveralls.io/github/AuthMe/ConfigMe?branch=master)
 [![Javadocs](https://www.javadoc.io/badge/ch.jalu/configme.svg)](https://www.javadoc.io/doc/ch.jalu/configme)
-[![Code Climate](https://codeclimate.com/github/AuthMe/ConfigMe/badges/gpa.svg)](https://codeclimate.com/github/AuthMe/ConfigMe)
+[![MegaLinter](https://github.com/AuthMe/ConfigMe/workflows/MegaLinter/badge.svg?branch=master)](https://github.com/AuthMe/ConfigMe/actions?query=workflow%3AMegaLinter+branch%3Amaster)
 
 A simple configuration management library with YAML support out of the box.