diff --git a/package-lock.json b/package-lock.json
index 519217f..06ef9eb 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -2406,11 +2406,6 @@
       "integrity": "sha1-0aIUg/0iu0HlihL6NCGCMUCJfEU=",
       "dev": true
     },
-    "popper.js": {
-      "version": "1.14.5",
-      "resolved": "https://registry.npmjs.org/popper.js/-/popper.js-1.14.5.tgz",
-      "integrity": "sha512-fs4Sd8bZLgEzrk8aS7Em1qh+wcawtE87kRUJQhK6+LndyV1HerX7+LURzAylVaTyWIn5NTB/lyjnWqw/AZ6Yrw=="
-    },
     "prelude-ls": {
       "version": "1.1.2",
       "resolved": "https://registry.npmjs.org/prelude-ls/-/prelude-ls-1.1.2.tgz",
diff --git a/package.json b/package.json
index 797617b..14206f8 100644
--- a/package.json
+++ b/package.json
@@ -20,7 +20,6 @@
     "jquery": "3.3.1",
     "lg-thumbnail": "1.1.0",
     "lightgallery": "1.6.11",
-    "mermaid": "7.1.2",
-    "popper.js": "1.14.5"
+    "mermaid": "7.1.2"
   }
 }