diff --git a/fixtures/node_modules/should-cover.js b/fixtures/node_modules/should-cover.js
index f36f449..a79558b 100644
--- a/fixtures/node_modules/should-cover.js
+++ b/fixtures/node_modules/should-cover.js
@@ -1,4 +1,4 @@
-let foo = function () {
+const foo = function () {
   console.log('foo')
 }
 foo()
diff --git a/fixtures/node_modules/should-not-cover.js b/fixtures/node_modules/should-not-cover.js
index aa5da74..7898ce6 100644
--- a/fixtures/node_modules/should-not-cover.js
+++ b/fixtures/node_modules/should-not-cover.js
@@ -1,4 +1,4 @@
-let bar = function () {
+const bar = function () {
   console.log('bar')
 }
 bar()
diff --git a/fixtures/plugin-should-cover.js b/fixtures/plugin-should-cover.js
index f36f449..a79558b 100644
--- a/fixtures/plugin-should-cover.js
+++ b/fixtures/plugin-should-cover.js
@@ -1,4 +1,4 @@
-let foo = function () {
+const foo = function () {
   console.log('foo')
 }
 foo()
diff --git a/fixtures/plugin-should-not-cover.js b/fixtures/plugin-should-not-cover.js
index aa5da74..7898ce6 100644
--- a/fixtures/plugin-should-not-cover.js
+++ b/fixtures/plugin-should-not-cover.js
@@ -1,4 +1,4 @@
-let bar = function () {
+const bar = function () {
   console.log('bar')
 }
 bar()
diff --git a/fixtures/should-cover.js b/fixtures/should-cover.js
index f36f449..a79558b 100644
--- a/fixtures/should-cover.js
+++ b/fixtures/should-cover.js
@@ -1,4 +1,4 @@
-let foo = function () {
+const foo = function () {
   console.log('foo')
 }
 foo()
diff --git a/fixtures/should-not-cover.js b/fixtures/should-not-cover.js
index aa5da74..7898ce6 100644
--- a/fixtures/should-not-cover.js
+++ b/fixtures/should-not-cover.js
@@ -1,4 +1,4 @@
-let bar = function () {
+const bar = function () {
   console.log('bar')
 }
 bar()
diff --git a/fixtures/should-respect-cwd.js b/fixtures/should-respect-cwd.js
index f36f449..a79558b 100644
--- a/fixtures/should-respect-cwd.js
+++ b/fixtures/should-respect-cwd.js
@@ -1,4 +1,4 @@
-let foo = function () {
+const foo = function () {
   console.log('foo')
 }
 foo()
diff --git a/package-lock.json b/package-lock.json
index bfb142b..119749c 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -235,15 +235,15 @@
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+      "version": "7.0.0",
+      "resolved": "https://registry.npmjs.org/acorn/-/acorn-7.0.0.tgz",
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+      "version": "5.0.2",
+      "resolved": "https://registry.npmjs.org/acorn-jsx/-/acorn-jsx-5.0.2.tgz",
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@@ -421,6 +415,12 @@
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-      "integrity": "sha1-r6uWJikQp/M8GaV3WCXGnzTjUMo=",
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@@ -755,9 +687,9 @@
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+      "resolved": "https://registry.npmjs.org/deglob/-/deglob-4.0.1.tgz",
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         "find-root": "^1.0.0",
         "glob": "^7.0.5",
-        "ignore": "^3.0.9",
+        "ignore": "^5.0.0",
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@@ -1513,9 +1439,9 @@
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+      "resolved": "https://registry.npmjs.org/doctrine/-/doctrine-3.0.0.tgz",
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@@ -1610,78 +1536,92 @@
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-        "eslint-visitor-keys": "^1.0.0",
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@@ -1791,31 +1731,40 @@
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+      "version": "1.0.3",
+      "resolved": "https://registry.npmjs.org/write/-/write-1.0.3.tgz",
+      "integrity": "sha512-/lg70HAjtkUgWPVZhZcm+T4hkL8Zbtp1nFNOn3lRrxnlv50SRBv7cR7RqR+GMsd3hUXy9hWBo4CHTbFTcOYwig==",
       "dev": true,
       "requires": {
         "mkdirp": "^0.5.1"
diff --git a/package.json b/package.json
index dfa24be..6fd28aa 100644
--- a/package.json
+++ b/package.json
@@ -25,7 +25,7 @@
     "mocha": "^6.1.4",
     "nyc": "^14.1.0",
     "pmock": "^0.2.3",
-    "standard": "^12.0.1",
+    "standard": "^14.2.0",
     "standard-version": "^7.0.0"
   },
   "scripts": {