diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 821633742..a996abf14 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -13,7 +13,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        node: [12, 14, 16]
+        node: [14, 16, 18]
         os: [ubuntu-latest, windows-latest]
 
     steps:
diff --git a/CHANGELOG b/CHANGELOG
index 17bb4b7f1..a58f931d7 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -1,3 +1,8 @@
+v1.6.0
+  date: 2023-01-28
+  changes:
+    - Requires node.js 14+.
+    - 
 v1.5.3
   date: 2022-04-23
   changes:
diff --git a/Gruntfile.js b/Gruntfile.js
index c0519abe2..8cfc6470e 100644
--- a/Gruntfile.js
+++ b/Gruntfile.js
@@ -15,18 +15,18 @@ module.exports = function(grunt) {
       }
     },
     eslint: {
-      gruntfile_tasks: ['Gruntfile.js', 'internal-tasks/*.js'],
-      libs_n_tests: ['lib/**/*.js', '<%= nodeunit.all %>'],
+      gruntfileTasks: ['Gruntfile.js', 'internal-tasks/*.js'],
+      libsAndTests: ['lib/**/*.js', '<%= nodeunit.all %>'],
       subgrunt: ['<%= subgrunt.all %>']
     },
     watch: {
-      gruntfile_tasks: {
-        files: ['<%= eslint.gruntfile_tasks %>'],
-        tasks: ['eslint:gruntfile_tasks']
+      gruntfileTasks: {
+        files: ['<%= eslint.gruntfileTasks %>'],
+        tasks: ['eslint:gruntfileTasks']
       },
-      libs_n_tests: {
-        files: ['<%= eslint.libs_n_tests %>'],
-        tasks: ['eslint:libs_n_tests', 'nodeunit']
+      libsAndTests: {
+        files: ['<%= eslint.libsAndTests %>'],
+        tasks: ['eslint:libsAndTests', 'nodeunit']
       },
       subgrunt: {
         files: ['<%= subgrunt.all %>'],
diff --git a/package.json b/package.json
index 1343da150..201048ef9 100644
--- a/package.json
+++ b/package.json
@@ -7,7 +7,7 @@
   "repository": "https://github.com/gruntjs/grunt.git",
   "license": "MIT",
   "engines": {
-    "node": ">=8"
+    "node": ">=14"
   },
   "scripts": {
     "test": "node bin/grunt test",
@@ -55,10 +55,10 @@
   },
   "devDependencies": {
     "difflet": "~1.0.1",
-    "eslint-config-grunt": "~1.0.1",
+    "eslint-config-grunt": "~2.0.1",
     "grunt-contrib-nodeunit": "~4.0.0",
     "grunt-contrib-watch": "~1.1.0",
-    "grunt-eslint": "~18.1.0",
+    "grunt-eslint": "~24.0.1",
     "temporary": "~0.0.4",
     "through2": "~4.0.2"
   },
diff --git a/test/gruntfile/multi-task-files.js b/test/gruntfile/multi-task-files.js
index d170d062d..3a519f649 100644
--- a/test/gruntfile/multi-task-files.js
+++ b/test/gruntfile/multi-task-files.js
@@ -59,7 +59,7 @@ module.exports = function(grunt) {
         ]
       },
       // File mapping options can be specified in these 2 formats.
-      built_mapping: {
+      builtMapping: {
         options: {a: 6, c: 66},
         expand: true,
         cwd: '<%= mappings.cwd %>',
@@ -68,7 +68,7 @@ module.exports = function(grunt) {
         rename: '<%= mappings.rename %>',
         extra: 123
       },
-      long3_mapping: {
+      long3Mapping: {
         options: {a: 7, c: 77},
         files: [
           {
@@ -81,22 +81,22 @@ module.exports = function(grunt) {
           }
         ]
       },
-      long4_mapping: {
+      long4Mapping: {
         options: {a: 8, c: 88},
         files: [
-          '<%= run.long3_mapping.files %>'
+          '<%= run.long3Mapping.files %>'
         ]
       },
-      long5_mapping: {
+      long5Mapping: {
         options: {a: 9, c: 99},
         files: [
-          '<%= run.long3_mapping.files %>',
-          '<%= run.long4_mapping.files %>'
+          '<%= run.long3Mapping.files %>',
+          '<%= run.long4Mapping.files %>'
         ]
       },
       // Need to ensure the task function is run if no files or options were
       // specified!
-      no_files_or_options: {},
+      noFilesOrOptions: {},
     },
   });
 
@@ -124,7 +124,7 @@ module.exports = function(grunt) {
   });
 
   var expecteds = {
-    'run:no_files_or_options': {
+    'run:noFilesOrOptions': {
       options: {a: 1, b: 11, d: 9},
       files: [],
     },
@@ -236,7 +236,7 @@ module.exports = function(grunt) {
         },
       ],
     },
-    'run:built_mapping': {
+    'run:builtMapping': {
       options: {a: 6, b: 11, c: 66, d: 9},
       files: [
         {
@@ -248,7 +248,7 @@ module.exports = function(grunt) {
             cwd: grunt.config.get('mappings.cwd'),
             src: ['*1.js', '*2.js'],
             dest: grunt.config.get('mappings.dest'),
-            rename: grunt.config.get('run.built_mapping.rename'),
+            rename: grunt.config.get('run.builtMapping.rename'),
             extra: 123,
           },
         },
@@ -258,16 +258,16 @@ module.exports = function(grunt) {
           extra: 123,
           orig: {
             expand: true,
-            cwd: grunt.config.get('run.built_mapping.cwd'),
+            cwd: grunt.config.get('run.builtMapping.cwd'),
             src: ['*1.js', '*2.js'],
-            dest: grunt.config.get('run.built_mapping.dest'),
-            rename: grunt.config.get('run.built_mapping.rename'),
+            dest: grunt.config.get('run.builtMapping.dest'),
+            rename: grunt.config.get('run.builtMapping.rename'),
             extra: 123,
           },
         },
       ],
     },
-    'run:long3_mapping': {
+    'run:long3Mapping': {
       options: {a: 7, b: 11, c: 77, d: 9},
       files: [
         {
@@ -292,13 +292,13 @@ module.exports = function(grunt) {
             cwd: grunt.config.get('mappings.cwd'),
             src: ['*1.js', '*2.js'],
             dest: grunt.config.get('mappings.dest'),
-            rename: grunt.config.get('run.built_mapping.rename'),
+            rename: grunt.config.get('run.builtMapping.rename'),
             extra: 123,
           },
         },
       ],
     },
-    'run:long4_mapping': {
+    'run:long4Mapping': {
       options: {a: 8, b: 11, c: 88, d: 9},
       files: [
         {
@@ -323,13 +323,13 @@ module.exports = function(grunt) {
             cwd: grunt.config.get('mappings.cwd'),
             src: ['*1.js', '*2.js'],
             dest: grunt.config.get('mappings.dest'),
-            rename: grunt.config.get('run.built_mapping.rename'),
+            rename: grunt.config.get('run.builtMapping.rename'),
             extra: 123,
           },
         },
       ],
     },
-    'run:long5_mapping': {
+    'run:long5Mapping': {
       options: {a: 9, b: 11, c: 99, d: 9},
       files: [
         {
@@ -354,7 +354,7 @@ module.exports = function(grunt) {
             cwd: grunt.config.get('mappings.cwd'),
             src: ['*1.js', '*2.js'],
             dest: grunt.config.get('mappings.dest'),
-            rename: grunt.config.get('run.built_mapping.rename'),
+            rename: grunt.config.get('run.builtMapping.rename'),
             extra: 123,
           },
         },
@@ -380,7 +380,7 @@ module.exports = function(grunt) {
             cwd: grunt.config.get('mappings.cwd'),
             src: ['*1.js', '*2.js'],
             dest: grunt.config.get('mappings.dest'),
-            rename: grunt.config.get('run.built_mapping.rename'),
+            rename: grunt.config.get('run.builtMapping.rename'),
             extra: 123,
           },
         },
@@ -427,8 +427,8 @@ module.exports = function(grunt) {
   });
 
   grunt.registerTask('default', [
-    'run:no_files_or_options',
-    'test:no_files_or_options',
+    'run:noFilesOrOptions',
+    'test:noFilesOrOptions',
     'run:dist/built.js',
     'test:dist/built.js',
     'run:dist/built1.js',
@@ -441,14 +441,14 @@ module.exports = function(grunt) {
     'test:long2',
     'run:long3',
     'test:long3',
-    'run:built_mapping',
-    'test:built_mapping',
-    'run:long3_mapping',
-    'test:long3_mapping',
-    'run:long4_mapping',
-    'test:long4_mapping',
-    'run:long5_mapping',
-    'test:long5_mapping',
+    'run:builtMapping',
+    'test:builtMapping',
+    'run:long3Mapping',
+    'test:long3Mapping',
+    'run:long4Mapping',
+    'test:long4Mapping',
+    'run:long5Mapping',
+    'test:long5Mapping',
     'run',
     'test:all',
     'test:counters',