diff --git a/package-lock.json b/package-lock.json
index 31d921b8..d1252d13 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -7,6 +7,7 @@
     "": {
       "name": "csscomb",
       "version": "4.3.0",
+      "hasInstallScript": true,
       "license": "MIT",
       "dependencies": {
         "@babel/polyfill": "^7.4.0",
@@ -25,7 +26,7 @@
         "@babel/node": "^7.2.2",
         "@babel/plugin-transform-destructuring": "^7.4.0",
         "@babel/plugin-transform-strict-mode": "^7.2.0",
-        "acorn": "^6.1.1",
+        "acorn": "^8.10.0",
         "eslint": "^5.15.3",
         "jshint": "2.10.2",
         "mocha": "^6.1.3"
@@ -326,9 +327,9 @@
       }
     },
     "node_modules/acorn": {
-      "version": "6.1.1",
-      "resolved": "https://registry.npmjs.org/acorn/-/acorn-6.1.1.tgz",
-      "integrity": "sha512-jPTiwtOxaHNaAPg/dmrJ/beuzLRnXtB0kQPQ8JpotKJgTB6rX6c8mlf315941pyjBSaPg8NHXS9fhP4u17DpGA==",
+      "version": "8.10.0",
+      "resolved": "https://registry.npmjs.org/acorn/-/acorn-8.10.0.tgz",
+      "integrity": "sha512-F0SAmZ8iUtS//m8DmCTA0jlh6TDKkHQyK6xc6V4KDTyZKA9dnvX9/3sRTVQrWm79glUAZbnmmNcdYwUIHWVybw==",
       "dev": true,
       "bin": {
         "acorn": "bin/acorn"
@@ -338,12 +339,12 @@
       }
     },
     "node_modules/acorn-jsx": {
-      "version": "5.0.1",
-      "resolved": "https://registry.npmjs.org/acorn-jsx/-/acorn-jsx-5.0.1.tgz",
-      "integrity": "sha512-HJ7CfNHrfJLlNTzIEUTj43LNWGkqpRLxm3YjAlcD0ACydk9XynzYsCBHxut+iqt+1aBXkx9UP/w/ZqMr13XIzg==",
+      "version": "5.3.2",
+      "resolved": "https://registry.npmjs.org/acorn-jsx/-/acorn-jsx-5.3.2.tgz",
+      "integrity": "sha512-rq9s+JNhf0IChjtDXxllJ7g41oZk5SlXtp0LHwyA5cejwn7vKmKp4pPri6YEePv2PU65sAsegbXtIinmDFDXgQ==",
       "dev": true,
       "peerDependencies": {
-        "acorn": "^6.0.0"
+        "acorn": "^6.0.0 || ^7.0.0 || ^8.0.0"
       }
     },
     "node_modules/ajv": {
@@ -1267,6 +1268,18 @@
         "node": ">=6.0.0"
       }
     },
+    "node_modules/espree/node_modules/acorn": {
+      "version": "6.4.2",
+      "resolved": "https://registry.npmjs.org/acorn/-/acorn-6.4.2.tgz",
+      "integrity": "sha512-XtGIhXwF8YM8bJhGxG5kXgjkEuNGLTkoYqVE+KMR+aspr4KGYmKYg7yUe3KghyQ9yheNwLnjmzh/7+gfDBmHCQ==",
+      "dev": true,
+      "bin": {
+        "acorn": "bin/acorn"
+      },
+      "engines": {
+        "node": ">=0.4.0"
+      }
+    },
     "node_modules/esprima": {
       "version": "4.0.1",
       "resolved": "https://registry.npmjs.org/esprima/-/esprima-4.0.1.tgz",
diff --git a/package.json b/package.json
index 21dde0da..c41b4ad3 100644
--- a/package.json
+++ b/package.json
@@ -30,7 +30,7 @@
     "@babel/node": "^7.2.2",
     "@babel/plugin-transform-destructuring": "^7.4.0",
     "@babel/plugin-transform-strict-mode": "^7.2.0",
-    "acorn": "^6.1.1",
+    "acorn": "^8.10.0",
     "eslint": "^5.15.3",
     "jshint": "2.10.2",
     "mocha": "^6.1.3"