diff --git a/package.json b/package.json
index 7c24a5a..e4c20f4 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "eleventy-base-blog",
-  "version": "4.0.0",
+  "version": "4.0.1",
   "description": "A starter repository for a blog web site using the Eleventy static site generator.",
   "scripts": {
     "build": "npx eleventy",
@@ -25,7 +25,6 @@
     "@11ty/eleventy": "^0.3.1",
     "@11ty/eleventy-plugin-rss": "^1.0.2",
     "@11ty/eleventy-plugin-syntaxhighlight": "^1.0.3",
-    "luxon": "^0.3.1",
-    "prismjs": "^1.10.0"
+    "luxon": "^1.0.0"
   }
 }