diff --git a/README.md b/README.md
index 284ca26e7f..82990c6ce5 100644
--- a/README.md
+++ b/README.md
@@ -2469,12 +2469,12 @@ Other Style Guides
 ## Whitespace
 
   <a name="whitespace--spaces"></a><a name="18.1"></a>
-  - [19.1](#whitespace--spaces) Use soft tabs (space character) set to 2 spaces. eslint: [`indent`](https://eslint.org/docs/rules/indent.html)
+  - [19.1](#whitespace--spaces) Use soft tabs (space character) set to 4 spaces. eslint: [`indent`](https://eslint.org/docs/rules/indent.html)
 
     ```javascript
     // bad
     function foo() {
-    ∙∙∙∙let name;
+    ∙∙let name;
     }
 
     // bad
@@ -2484,7 +2484,7 @@ Other Style Guides
 
     // good
     function baz() {
-    ∙∙let name;
+    ∙∙∙∙let name;
     }
     ```
 
diff --git a/linters/.eslintrc b/linters/.eslintrc
index 9e203a5473..65385bafc6 100644
--- a/linters/.eslintrc
+++ b/linters/.eslintrc
@@ -2,4 +2,5 @@
 // Copy this file, and add rule overrides as needed.
 {
   "extends": "airbnb"
+  "indent": ["error", 4]
 }
diff --git a/linters/.jshintrc b/linters/.jshintrc
index a7a08a349e..5f034bf534 100644
--- a/linters/.jshintrc
+++ b/linters/.jshintrc
@@ -28,8 +28,8 @@
   // Prohibit use of == and != in favor of === and !==.
   "eqeqeq": true,
 
-  // Enforce tab width of 2 spaces.
-  "indent": 2,
+  // Enforce tab width of 4 spaces.
+  "indent": 4,
 
   // Prohibit use of a variable before it is defined.
   "latedef": true,
diff --git a/linters/.markdownlint.json b/linters/.markdownlint.json
index 951337dbc5..9063681f0f 100644
--- a/linters/.markdownlint.json
+++ b/linters/.markdownlint.json
@@ -24,9 +24,9 @@
   "comment": "MD006: Consider starting bulleted lists at the beginning of the line.",
   "ul-start-left": false,
 
-  "comment": "MD007: Unordered list indentation: 2 spaces.",
+  "comment": "MD007: Unordered list indentation: 4 spaces.",
   "ul-indent": {
-    "indent": 2,
+    "indent": 4,
     "start_indented": true
   },
 
diff --git a/linters/SublimeLinter/SublimeLinter.sublime-settings b/linters/SublimeLinter/SublimeLinter.sublime-settings
index 259dbaff6a..0c826c3c71 100644
--- a/linters/SublimeLinter/SublimeLinter.sublime-settings
+++ b/linters/SublimeLinter/SublimeLinter.sublime-settings
@@ -43,8 +43,8 @@
       // Suppress warnings about == null comparisons.
       "eqnull": true,
 
-      // Enforce tab width of 2 spaces.
-      "indent": 2,
+      // Enforce tab width of 4 spaces.
+      "indent": 4,
 
       // Prohibit use of a variable before it is defined.
       "latedef": true,