diff --git a/.eslintrc.js b/.eslintrc.js
index afeb7948697..ec7ba367ffa 100644
--- a/.eslintrc.js
+++ b/.eslintrc.js
@@ -38,6 +38,7 @@ module.exports = {
     'ember-concurrency/no-perform-without-catch': 'warn',
     'ember-concurrency/require-task-name-suffix': 'error',
 
+    'unicorn/explicit-length-check': ['error', { 'non-zero': 'not-equal' }],
     // disabled because we need `null` since JSON has no `undefined`
     'unicorn/no-null': 'off',
     // disabled because this rule conflicts with prettier
@@ -84,7 +85,7 @@ module.exports = {
       files: ['mirage/**/*.js'],
       rules: {
         // disabled because of different `.find()` meaning
-        'unicorn/no-fn-reference-in-iterator': 'off',
+        'unicorn/no-array-callback-reference': 'off',
       },
     },
 
diff --git a/app/controllers/crate/version.js b/app/controllers/crate/version.js
index 4b77313027b..7a8d89aaa7b 100644
--- a/app/controllers/crate/version.js
+++ b/app/controllers/crate/version.js
@@ -81,7 +81,7 @@ export default class CrateVersionController extends Controller {
         versions.push(version.getProperties('id', 'num'));
       });
     }
-    if (extra.length > 0) {
+    if (extra.length !== 0) {
       versions.push({
         id: null,
         num: 'Other',
@@ -136,7 +136,7 @@ export default class CrateVersionController extends Controller {
     // if we know about a successful docs.rs build, we'll return a link to that
     if (this.loadDocsBuildsTask.lastSuccessful) {
       let docsBuilds = this.loadDocsBuildsTask.lastSuccessful.value;
-      if (docsBuilds.length > 0 && docsBuilds[0].build_status === true) {
+      if (docsBuilds.length !== 0 && docsBuilds[0].build_status === true) {
         return `https://docs.rs/${this.crate.name}/${this.currentVersion.num}`;
       }
     }
diff --git a/mirage/route-handlers/summary.js b/mirage/route-handlers/summary.js
index 881f19cfc88..d21ea0352e4 100644
--- a/mirage/route-handlers/summary.js
+++ b/mirage/route-handlers/summary.js
@@ -9,7 +9,7 @@ export function summary(schema) {
   let most_recently_downloaded = crates.sort((a, b) => b.recent_downloads - a.recent_downloads).slice(0, 10);
 
   let num_crates = crates.length;
-  // eslint-disable-next-line unicorn/no-reduce
+  // eslint-disable-next-line unicorn/no-array-reduce
   let num_downloads = crates.models.reduce((sum, crate) => sum + crate.downloads, 0);
 
   let popular_categories = schema.categories
diff --git a/package.json b/package.json
index 3d1a2df7695..846a9efd6d0 100644
--- a/package.json
+++ b/package.json
@@ -111,7 +111,7 @@
     "eslint-plugin-ember-concurrency": "0.2.1",
     "eslint-plugin-import-helpers": "1.1.0",
     "eslint-plugin-prettier": "3.3.0",
-    "eslint-plugin-unicorn": "24.0.0",
+    "eslint-plugin-unicorn": "25.0.0",
     "loader.js": "4.7.0",
     "normalize.css": "8.0.1",
     "nyc": "15.1.0",
diff --git a/yarn.lock b/yarn.lock
index 3031e6e8288..b45e44fa42d 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -7390,10 +7390,10 @@ eslint-plugin-prettier@3.3.0:
   dependencies:
     prettier-linter-helpers "^1.0.0"
 
-eslint-plugin-unicorn@24.0.0:
-  version "24.0.0"
-  resolved "https://registry.yarnpkg.com/eslint-plugin-unicorn/-/eslint-plugin-unicorn-24.0.0.tgz#08017ccd7ac704777d459cff6e13a35f54cbcab1"
-  integrity sha512-NfLjIZas/ZUwc3S+pUtbTRqgCkODxPEkJBJ5ZR8wIu90BmX4jmXp10hoOZMScR2CR1NYTtrx0OX4BQvBnbzZzA==
+eslint-plugin-unicorn@25.0.0:
+  version "25.0.0"
+  resolved "https://registry.yarnpkg.com/eslint-plugin-unicorn/-/eslint-plugin-unicorn-25.0.0.tgz#b5718381ac615f2bcf7814e4acf0aac78b11a10f"
+  integrity sha512-RuhPUrsKuRj0YGz8lMuh5Z5DJoC/hmUR6omvlquLlY6SYY+oZXMFyp83ckpqLMhbafqUx+JttWOPOjfP4W9Y+Q==
   dependencies:
     ci-info "^2.0.0"
     clean-regexp "^1.0.0"