diff --git a/eslint-configs/eslint-config-seekingalpha-base/CHANGELOG.md b/eslint-configs/eslint-config-seekingalpha-base/CHANGELOG.md
index 1cd6d78f..938bd570 100644
--- a/eslint-configs/eslint-config-seekingalpha-base/CHANGELOG.md
+++ b/eslint-configs/eslint-config-seekingalpha-base/CHANGELOG.md
@@ -1,5 +1,10 @@
 # Change Log
 
+## 8.5.0 - 2024-06-16
+
+- [deps] update `eslint-plugin-unicorn` to version `53.0.0`
+- [breaking] enable `unicorn/no-negation-in-equality-check` rule
+
 ## 8.4.0 - 2024-05-28
 
 - [deps] update `eslint-plugin-promise` to version `6.2.0`
diff --git a/eslint-configs/eslint-config-seekingalpha-base/README.md b/eslint-configs/eslint-config-seekingalpha-base/README.md
index af2e8880..351bcb0f 100644
--- a/eslint-configs/eslint-config-seekingalpha-base/README.md
+++ b/eslint-configs/eslint-config-seekingalpha-base/README.md
@@ -6,7 +6,7 @@ This package includes the shareable ESLint config used by [SeekingAlpha](https:/
 
 Install ESLint and all [Peer Dependencies](https://nodejs.org/en/blog/npm/peer-dependencies/):
 
-    npm install eslint@8.57.0 eslint-plugin-array-func@4.0.0 eslint-plugin-import@2.29.1 eslint-plugin-promise@6.2.0 eslint-plugin-unicorn@53.0.0 --save-dev
+    npm install eslint@8.57.0 eslint-plugin-array-func@4.0.0 eslint-plugin-import@2.29.1 eslint-plugin-promise@6.2.0 eslint-plugin-unicorn@54.0.0 --save-dev
 
 Install SeekingAlpha shareable ESLint:
 
diff --git a/eslint-configs/eslint-config-seekingalpha-base/package.json b/eslint-configs/eslint-config-seekingalpha-base/package.json
index 9f8750e6..256b9edd 100644
--- a/eslint-configs/eslint-config-seekingalpha-base/package.json
+++ b/eslint-configs/eslint-config-seekingalpha-base/package.json
@@ -1,6 +1,6 @@
 {
   "name": "eslint-config-seekingalpha-base",
-  "version": "8.4.0",
+  "version": "8.5.0",
   "description": "SeekingAlpha's sharable base ESLint config",
   "main": "index.js",
   "scripts": {
@@ -52,7 +52,7 @@
     "eslint-plugin-array-func": "4.0.0",
     "eslint-plugin-import": "2.29.1",
     "eslint-plugin-promise": "6.2.0",
-    "eslint-plugin-unicorn": "53.0.0"
+    "eslint-plugin-unicorn": "54.0.0"
   },
   "devDependencies": {
     "eslint": "8.57.0",
@@ -60,6 +60,6 @@
     "eslint-plugin-array-func": "4.0.0",
     "eslint-plugin-import": "2.29.1",
     "eslint-plugin-promise": "6.2.0",
-    "eslint-plugin-unicorn": "53.0.0"
+    "eslint-plugin-unicorn": "54.0.0"
   }
 }
diff --git a/eslint-configs/eslint-config-seekingalpha-base/rules/eslint-plugin-unicorn/index.js b/eslint-configs/eslint-config-seekingalpha-base/rules/eslint-plugin-unicorn/index.js
index f9372e70..e0589025 100644
--- a/eslint-configs/eslint-config-seekingalpha-base/rules/eslint-plugin-unicorn/index.js
+++ b/eslint-configs/eslint-config-seekingalpha-base/rules/eslint-plugin-unicorn/index.js
@@ -126,6 +126,9 @@ module.exports = {
     // https://github.com/sindresorhus/eslint-plugin-unicorn/blob/main/docs/rules/no-magic-array-flat-depth.md
     'unicorn/no-magic-array-flat-depth': 'error',
 
+    // https://github.com/sindresorhus/eslint-plugin-unicorn/blob/main/docs/rules/no-negation-in-equality-check.md
+    'unicorn/no-negation-in-equality-check': 'error',
+
     /*
      * Disabled in favour of native ESLint no-negated-condition rule
      * https://github.com/sindresorhus/eslint-plugin-unicorn/blob/main/docs/rules/no-negated-condition.md
diff --git a/package.json b/package.json
index 4ca1eafb..8dd4ce39 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "seekingalpha-javascript-style",
-  "version": "5.38.26",
+  "version": "5.38.27",
   "description": "Set of linting rules, guides and best practices for best Javascript code",
   "main": "index.js",
   "type": "module",