diff --git a/package-lock.json b/package-lock.json
index 7a1a0ac..7d97424 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "@readium/css",
-  "version": "2.0.0-beta.18",
+  "version": "2.0.0-beta.19",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "@readium/css",
-      "version": "2.0.0-beta.18",
+      "version": "2.0.0-beta.19",
       "license": "BSD-3-Clause",
       "devDependencies": {
         "@daltontan/postcss-import-json": "^1.1.1",
@@ -4132,9 +4132,9 @@
       }
     },
     "node_modules/tar-fs": {
-      "version": "3.0.9",
-      "resolved": "https://registry.npmjs.org/tar-fs/-/tar-fs-3.0.9.tgz",
-      "integrity": "sha512-XF4w9Xp+ZQgifKakjZYmFdkLoSWd34VGKcsTCwlNWM7QG3ZbaxnTsaBwnjFZqHRf/rROxaR8rXnbtwdvaDI+lA==",
+      "version": "3.1.1",
+      "resolved": "https://registry.npmjs.org/tar-fs/-/tar-fs-3.1.1.tgz",
+      "integrity": "sha512-LZA0oaPOc2fVo82Txf3gw+AkEd38szODlptMYejQUhndHMLQ9M059uXR+AfS7DNo0NpINvSqDsvyaCrBVkptWg==",
       "dev": true,
       "license": "MIT",
       "dependencies": {