diff --git a/package-lock.json b/package-lock.json
index 15cd3bd..12bc52c 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -2945,13 +2945,21 @@
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@@ -3195,20 +3203,12 @@
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@@ -4857,6 +4849,24 @@
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@@ -7525,7 +7535,8 @@
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@@ -8118,9 +8129,9 @@
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@@ -8240,31 +8259,68 @@
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@@ -11072,12 +11139,21 @@
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@@ -14791,12 +14867,21 @@
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@@ -14897,6 +14982,24 @@
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@@ -18514,6 +18561,35 @@
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+        "commander": "^2.20.0",
+        "source-map": "~0.6.1",
+        "source-map-support": "~0.5.12"
+      },
+      "dependencies": {
+        "commander": {
+          "version": "2.20.3",
+          "resolved": "https://registry.npmjs.org/commander/-/commander-2.20.3.tgz",
+          "integrity": "sha512-GpVkmM8vF2vQUkj2LvZmD35JxeJOLCwJ9cUkugyk2nuhbv3+mJvpLYYt+0+USMxE+oj+ey/lJEnhZw75x/OMcQ==",
+          "dev": true
+        },
+        "source-map-support": {
+          "version": "0.5.16",
+          "resolved": "https://registry.npmjs.org/source-map-support/-/source-map-support-0.5.16.tgz",
+          "integrity": "sha512-efyLRJDr68D9hBBNIPWFjhpFzURh+KJykQwvMyW5UiZzYwoF6l4YMMDIJJEyFWxWCqfyxLzz6tSfUFR+kXXsVQ==",
+          "dev": true,
+          "requires": {
+            "buffer-from": "^1.0.0",
+            "source-map": "^0.6.0"
+          }
+        }
+      }
+    },
     "test-exclude": {
       "version": "4.2.1",
       "resolved": "https://registry.npmjs.org/test-exclude/-/test-exclude-4.2.1.tgz",
@@ -18741,12 +18817,6 @@
         "repeat-string": "1.6.1"
       }
     },
-    "toposort": {
-      "version": "1.0.6",
-      "resolved": "https://registry.npmjs.org/toposort/-/toposort-1.0.6.tgz",
-      "integrity": "sha1-wxdI5V0hDv/AD9zcfW5o19e7nOw=",
-      "dev": true
-    },
     "tough-cookie": {
       "version": "2.3.4",
       "resolved": "https://registry.npmjs.org/tough-cookie/-/tough-cookie-2.3.4.tgz",
@@ -19047,16 +19117,6 @@
       "resolved": "https://registry.npmjs.org/ua-parser-js/-/ua-parser-js-0.7.17.tgz",
       "integrity": "sha512-uRdSdu1oA1rncCQL7sCj8vSyZkgtL7faaw9Tc9rZ3mGgraQ7+Pdx7w5mnOSF3gw9ZNG6oc+KXfkon3bKuROm0g=="
     },
-    "uglify-js": {
-      "version": "3.3.21",
-      "resolved": "https://registry.npmjs.org/uglify-js/-/uglify-js-3.3.21.tgz",
-      "integrity": "sha512-uy82472lH8tshK3jS3c5IFb5MmNKd/5qyBd0ih8sM42L3jWvxnE339U9gZU1zufnLVs98Stib9twq8dLm2XYCA==",
-      "dev": true,
-      "requires": {
-        "commander": "2.15.1",
-        "source-map": "0.6.1"
-      }
-    },
     "uglify-to-browserify": {
       "version": "1.0.2",
       "resolved": "https://registry.npmjs.org/uglify-to-browserify/-/uglify-to-browserify-1.0.2.tgz",
@@ -19339,12 +19399,6 @@
         "xdg-basedir": "3.0.0"
       }
     },
-    "upper-case": {
-      "version": "1.1.3",
-      "resolved": "https://registry.npmjs.org/upper-case/-/upper-case-1.1.3.tgz",
-      "integrity": "sha1-9rRQHC7EzdJrp4vnIilh3ndiFZg=",
-      "dev": true
-    },
     "uri-js": {
       "version": "3.0.2",
       "resolved": "https://registry.npmjs.org/uri-js/-/uri-js-3.0.2.tgz",
diff --git a/package.json b/package.json
index 81833d2..7844be9 100644
--- a/package.json
+++ b/package.json
@@ -91,7 +91,7 @@
     "express": "^4.15.3",
     "extract-text-webpack-plugin": "^4.0.0-beta.0",
     "file-loader": "^2.0.0",
-    "html-webpack-plugin": "^3.2.0",
+    "html-webpack-plugin": "^4.0.0",
     "identity-obj-proxy": "^3.0.0",
     "jest": "^22.4.2",
     "jsdom": "^11.0.0",