diff --git a/demo/package-lock.json b/demo/package-lock.json
index a1f67ae..e91ca91 100644
--- a/demo/package-lock.json
+++ b/demo/package-lock.json
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-            "wrap-ansi": "2.1.0"
-          },
-          "dependencies": {
-            "string-width": {
-              "version": "1.0.2",
-              "resolved": "https://registry.npmjs.org/string-width/-/string-width-1.0.2.tgz",
-              "integrity": "sha1-EYvfW4zcUaKn5w0hHgfisLmxB9M=",
-              "dev": true,
-              "requires": {
-                "code-point-at": "1.1.0",
-                "is-fullwidth-code-point": "1.0.0",
-                "strip-ansi": "3.0.1"
-              }
-            }
-          }
-        }
-      }
-    },
-    "yargs-parser": {
-      "version": "7.0.0",
-      "resolved": "https://registry.npmjs.org/yargs-parser/-/yargs-parser-7.0.0.tgz",
-      "integrity": "sha1-jQrELxbqVd69MyyvTEA4s+P139k=",
-      "dev": true,
-      "requires": {
-        "camelcase": "4.1.0"
-      },
-      "dependencies": {
-        "camelcase": {
-          "version": "4.1.0",
-          "resolved": "https://registry.npmjs.org/camelcase/-/camelcase-4.1.0.tgz",
-          "integrity": "sha1-1UVjW+HjPFQmScaRc+Xeas+uNN0=",
-          "dev": true
-        }
-      }
     }
   }
 }
diff --git a/demo/package.json b/demo/package.json
index 2102e39..4e75752 100644
--- a/demo/package.json
+++ b/demo/package.json
@@ -24,9 +24,9 @@
   "devDependencies": {
     "babel-preset-env": "^1.6.1",
     "babel-preset-stage-0": "^6.24.1",
-    "css-loader": "^0.28.7",
-    "style-loader": "^0.18.2",
-    "webpack": "^3.5.6",
+    "css-loader": "^6.7.3",
+    "style-loader": "^3.3.1",
+    "webpack": "^5.75.0",
     "webpack-dev-server": "^2.8.1"
   }
 }