--- a/tools/lint/codespell.yml
+++ b/tools/lint/codespell.yml
@@ -29,10 +29,12 @@ codespell:
         - xhtml
         - cpp
         - c
         - h
         - configure
         - py
         - properties
         - rst
+    support-files:
+        - 'tools/lint/spell/**'
     type: external
     payload: spell:lint

--- a/tools/lint/eslint.yml
+++ b/tools/lint/eslint.yml
@@ -1,10 +1,33 @@
 ---
 eslint:
     description: JavaScript linter
     # ESLint infra handles its own path filtering, so just include cwd
     include: ['.']
     exclude: []
     extensions: ['js', 'jsm', 'jsx', 'xml', 'html', 'xhtml']
+    support-files:
+        - '**/.eslintrc.js'
+        - '.eslintignore'
+        - 'tools/lint/eslint/**'
+        # Files that can influence global variables
+        - 'browser/base/content/nsContextMenu.js'
+        - 'browser/base/content/utilityOverlay.js'
+        - 'browser/components/customizableui/content/panelUI.js'
+        - 'browser/components/downloads/content/downloads.js'
+        - 'browser/components/downloads/content/indicator.js'
+        - 'browser/components/places/content/browserPlacesViews.js'
+        - 'browser/components/places/content/controller.js'
+        - 'browser/components/places/content/treeView.js'
+        - 'testing/mochitest/tests/SimpleTest/EventUtils.js'
+        - 'testing/mochitest/tests/SimpleTest/MockObjects.js'
+        - 'testing/mochitest/tests/SimpleTest/SimpleTest.js'
+        - 'testing/mochitest/tests/SimpleTest/WindowSnapshot.js'
+        - 'toolkit/components/printing/content/printUtils.js'
+        - 'toolkit/components/viewsource/content/viewSourceUtils.js'
+        - 'toolkit/content/contentAreaUtils.js'
+        - 'toolkit/content/editMenuOverlay.js'
+        - 'toolkit/content/globalOverlay.js'
+        - 'toolkit/modules/Services.jsm'
     type: external
     payload: eslint:lint
     setup: eslint:setup

--- a/tools/lint/eslint/eslint-plugin-mozilla/lib/environments/browser-window.js
+++ b/tools/lint/eslint/eslint-plugin-mozilla/lib/environments/browser-window.js
@@ -15,16 +15,19 @@
 
 var fs = require("fs");
 var path = require("path");
 var helpers = require("../helpers");
 var globals = require("../globals");
 
 const rootDir = helpers.rootDir;
 
+// When updating EXTRA_SCRIPTS or MAPPINGS, be sure to also update the
+// 'support-files' config in `tools/lint/eslint.yml`.
+
 // These are scripts not included in global-scripts.inc, but which are loaded
 // via overlays.
 const EXTRA_SCRIPTS = [
   "browser/base/content/nsContextMenu.js",
   "toolkit/content/contentAreaUtils.js",
   "browser/components/places/content/editBookmark.js",
   "browser/components/downloads/content/downloads.js",
   "browser/components/downloads/content/indicator.js",

--- a/tools/lint/eslint/eslint-plugin-mozilla/lib/environments/simpletest.js
+++ b/tools/lint/eslint/eslint-plugin-mozilla/lib/environments/simpletest.js
@@ -12,16 +12,18 @@
 // -----------------------------------------------------------------------------
 // Rule Definition
 // -----------------------------------------------------------------------------
 
 var path = require("path");
 var helpers = require("../helpers");
 var globals = require("../globals");
 
+// When updating this list, be sure to also update the 'support-files' config
+// in `tools/lint/eslint.yml`.
 const simpleTestFiles = [
   "ExtensionTestUtils.js",
   "EventUtils.js",
   "MockObjects.js",
   "SimpleTest.js",
   "WindowSnapshot.js"
 ];
 const simpleTestPath = "testing/mochitest/tests/SimpleTest";

--- a/tools/lint/flake8.yml
+++ b/tools/lint/flake8.yml
@@ -36,11 +36,14 @@ flake8:
         - toolkit/components/telemetry
         - toolkit/crashreporter/tools/upload_symbols.py
         - tools/
     # Excludes should be added to topsrcdir/.flake8 due to a bug in flake8 where
     # specifying --exclude causes custom configuration files to be ignored.
     exclude: []
     # The configure option is used by the build system
     extensions: ['configure', 'py']
+    support-files:
+        - '**/.flake8'
+        - 'tools/lint/python/flake8*'
     type: external
     payload: python.flake8:lint
     setup: python.flake8:setup

--- a/tools/lint/py2.yml
+++ b/tools/lint/py2.yml
@@ -52,11 +52,13 @@ py2:
         - tools/lint
         - tools/mach_commands.py
         - tools/power/mach_commands.py
         - tools/profiler
         - tools/rb
         - tools/update-packaging
         - xpcom
     extensions: ['py']
+    support-files:
+        - 'tools/lint/python/*compat*'
     type: external
     payload: python.compat:lintpy2
     setup: python.compat:setuppy2

--- a/tools/lint/py3.yml
+++ b/tools/lint/py3.yml
@@ -39,11 +39,13 @@ py3:
         - toolkit
         - tools/jprof
         - tools/profiler
         - tools/rb
         - tools/update-packaging
         - xpcom/idl-parser
         - xpcom/typelib
     extensions: ['py']
+    support-files:
+        - 'tools/lint/python/*compat*'
     type: external
     payload: python.compat:lintpy3
     setup: python.compat:setuppy3

--- a/tools/lint/shellcheck.yml
+++ b/tools/lint/shellcheck.yml
@@ -2,11 +2,13 @@
 shellcheck:
     description: Shell script linter
     include:
         - taskcluster/docker/
     exclude: []
     # 1090: https://github.com/koalaman/shellcheck/wiki/SC1090
     # 'Can't follow a non-constant source'
     extensions: ['sh']
+    support-files:
+        - 'tools/lint/shell/**'
     excludecodes: ['1090', '1091']
     type: external
     payload: shell:lint

--- a/tools/lint/wpt.yml
+++ b/tools/lint/wpt.yml
@@ -1,8 +1,10 @@
 ---
 wpt:
     description: web-platform-tests lint
     include:
         - testing/web-platform/tests
     exclude: []
+    support-files:
+        - tools/lint/wpt/wpt.py
     type: external
     payload: wpt.wpt:lint

--- a/tools/lint/wpt_manifest.yml
+++ b/tools/lint/wpt_manifest.yml
@@ -1,9 +1,11 @@
 ---
 wpt_manifest:
     description: web-platform-tests manifest lint
     include:
         - testing/web-platform/tests
         - testing/web-platform/mozilla/tests
     exclude: []
+    support-files:
+        - tools/lint/wpt/wpt_manifest.py
     type: structured_log
     payload: wpt.wpt_manifest:lint

--- a/tools/lint/yaml.yml
+++ b/tools/lint/yaml.yml
@@ -4,10 +4,13 @@ yamllint:
     include:
         - .cron.yml
         - python/mozlint/
         - security/nss/.taskcluster.yml
         - taskcluster
         - testing/mozharness
         - tools
     extensions: ['yml', 'yaml']
+    support-files:
+        - '**/.yamllint'
+        - 'tools/lint/yamllint_/**'
     type: external
     payload: yamllint_:lint