diff --git a/package-lock.json b/package-lock.json
index 7ec4519..b66104b 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -30,6 +30,12 @@
         "getcontributors": "^2.23.0"
       }
     },
+    "@bevry/valid-filename": {
+      "version": "2.6.0",
+      "resolved": "https://registry.npmjs.org/@bevry/valid-filename/-/valid-filename-2.6.0.tgz",
+      "integrity": "sha512-p5sl7sUGPbScN99KITIvuKWul9ICuYuXCAz5VjKoUC1fFllU1h2nB1bQYOkZNi0TLCWtk5LIdAg73fPxqgWyXw==",
+      "dev": true
+    },
     "@types/ansicolors": {
       "version": "0.0.33",
       "resolved": "https://registry.npmjs.org/@types/ansicolors/-/ansicolors-0.0.33.tgz",
@@ -880,6 +886,12 @@
         }
       }
     },
+    "fdir": {
+      "version": "6.1.1",
+      "resolved": "https://registry.npmjs.org/fdir/-/fdir-6.1.1.tgz",
+      "integrity": "sha512-QfKBVg453Dyn3mr0Q0O+Tkr1r79lOTAKSi9f/Ot4+qVEwxWhav2Z+SudrG9vQjM2aYRMQQZ2/Q1zdA8ACM1pDg==",
+      "dev": true
+    },
     "fellow": {
       "version": "6.21.0",
       "resolved": "https://registry.npmjs.org/fellow/-/fellow-6.21.0.tgz",
@@ -895,12 +907,6 @@
         "escape-string-regexp": "^1.0.5"
       }
     },
-    "filename-reserved-regex": {
-      "version": "2.0.0",
-      "resolved": "https://registry.npmjs.org/filename-reserved-regex/-/filename-reserved-regex-2.0.0.tgz",
-      "integrity": "sha1-q/c9+rc10EVECr/qLZHzieu/oik=",
-      "dev": true
-    },
     "fs.realpath": {
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/fs.realpath/-/fs.realpath-1.0.0.tgz",
@@ -1549,23 +1555,13 @@
       "dev": true
     },
     "valid-directory": {
-      "version": "3.5.0",
-      "resolved": "https://registry.npmjs.org/valid-directory/-/valid-directory-3.5.0.tgz",
-      "integrity": "sha512-UqfMc1/zfKRFqNKwmDSuexzDsxPJGRIEDjTZ9r52IYfZBYbrKjIb3KAj6RW9J3VhOAUt//+aNf3DTqYaLY60Dg==",
-      "dev": true,
-      "requires": {
-        "editions": "^6.1.0",
-        "readdir-cluster": "^3.14.0",
-        "valid-filename": "^3.1.0"
-      }
-    },
-    "valid-filename": {
-      "version": "3.1.0",
-      "resolved": "https://registry.npmjs.org/valid-filename/-/valid-filename-3.1.0.tgz",
-      "integrity": "sha512-O99sdfhdGCiWoN4cv6Unq4eJ2EuXwRsOLCeSw+IJyMYgwVK0BPmaUnzhWQw5E8qknLTVrVExCr6xxTBnRBvtsQ==",
+      "version": "4.9.0",
+      "resolved": "https://registry.npmjs.org/valid-directory/-/valid-directory-4.9.0.tgz",
+      "integrity": "sha512-IV2E9N+GkbLZ00Y8eY9mrj5tblQhu63IOPZJquguIy17NkDOn1+4S8Cz24hQ8fvhfbCFVDPd50JQFs4tCy4wKg==",
       "dev": true,
       "requires": {
-        "filename-reserved-regex": "^2.0.0"
+        "@bevry/valid-filename": "^2.6.0",
+        "fdir": "^6.1.1"
       }
     },
     "version-compare": {
diff --git a/package.json b/package.json
index c44e17d..21e188a 100644
--- a/package.json
+++ b/package.json
@@ -108,7 +108,7 @@
     "docpad": "^6.83.2",
     "docpad-plugintester": "^1.7.3",
     "projectz": "^2.17.0",
-    "valid-directory": "^3.5.0"
+    "valid-directory": "^4.9.0"
   },
   "peerDependencies": {
     "docpad": "^6.83.2"