diff --git a/demo/package-lock.json b/demo/package-lock.json
index a8ad133..577fa48 100644
--- a/demo/package-lock.json
+++ b/demo/package-lock.json
@@ -2278,6 +2278,12 @@
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       "dev": true
     },
+    "basic-auth": {
+      "version": "1.1.0",
+      "resolved": "https://registry.npmjs.org/basic-auth/-/basic-auth-1.1.0.tgz",
+      "integrity": "sha1-RSIe5Cn37h5QNb4/UVM/HN/SmIQ=",
+      "dev": true
+    },
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       "version": "0.6.1",
       "resolved": "https://registry.npmjs.org/batch/-/batch-0.6.1.tgz",
@@ -2914,9 +2920,9 @@
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     "colors": {
-      "version": "1.0.3",
-      "resolved": "https://registry.npmjs.org/colors/-/colors-1.0.3.tgz",
-      "integrity": "sha1-BDP0TYCWgP3rYO0mDxsMJi6CpAs=",
+      "version": "1.4.0",
+      "resolved": "https://registry.npmjs.org/colors/-/colors-1.4.0.tgz",
+      "integrity": "sha512-a+UqTh4kgZg/SlGvfbzDHpgRu7AAQOmmqRHJnxhRZICKFUT91brVhNNt58CMWU9PsBbv3PDCZUHbVxuDiH2mtA==",
       "dev": true
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@@ -3607,9 +3613,9 @@
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     "ecstatic": {
-      "version": "3.3.1",
-      "resolved": "https://registry.npmjs.org/ecstatic/-/ecstatic-3.3.1.tgz",
-      "integrity": "sha512-/rrctvxZ78HMI/tPIsqdvFKHHscxR3IJuKrZI2ZoUgkt2SiufyLFBmcco+aqQBIu6P1qBsUNG3drAAGLx80vTQ==",
+      "version": "3.3.2",
+      "resolved": "https://registry.npmjs.org/ecstatic/-/ecstatic-3.3.2.tgz",
+      "integrity": "sha512-fLf9l1hnwrHI2xn9mEDT7KIi22UDqA2jaCwyCbSUJh9a1V+LEUSL/JO/6TIz/QyuBURWUHrFL5Kg2TtO1bkkog==",
       "dev": true,
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@@ -5382,19 +5388,64 @@
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-      "version": "0.11.1",
-      "resolved": "https://registry.npmjs.org/http-server/-/http-server-0.11.1.tgz",
-      "integrity": "sha512-6JeGDGoujJLmhjiRGlt8yK8Z9Kl0vnl/dQoQZlc4oeqaUoAKQg94NILLfrY3oWzSyFaQCVNTcKE5PZ3cH8VP9w==",
+      "version": "0.12.0",
+      "resolved": "https://registry.npmjs.org/http-server/-/http-server-0.12.0.tgz",
+      "integrity": "sha512-imGLDSTT1BZ0QG1rBFnaZ6weK5jeisUnCxZQI1cpYTdz0luPUM5e3s+WU5zRWEkiI6DQxL2p54oeKrDlzO6bRw==",
       "dev": true,
       "requires": {
-        "colors": "1.0.3",
-        "corser": "~2.0.0",
-        "ecstatic": "^3.0.0",
-        "http-proxy": "^1.8.1",
-        "opener": "~1.4.0",
-        "optimist": "0.6.x",
-        "portfinder": "^1.0.13",
-        "union": "~0.4.3"
+        "basic-auth": "^1.0.3",
+        "colors": "^1.3.3",
+        "corser": "^2.0.1",
+        "ecstatic": "^3.3.2",
+        "http-proxy": "^1.17.0",
+        "opener": "^1.5.1",
+        "optimist": "~0.6.1",
+        "portfinder": "^1.0.20",
+        "secure-compare": "3.0.1",
+        "union": "~0.5.0"
+      },
+      "dependencies": {
+        "async": {
+          "version": "2.6.3",
+          "resolved": "https://registry.npmjs.org/async/-/async-2.6.3.tgz",
+          "integrity": "sha512-zflvls11DCy+dQWzTW2dzuilv8Z5X/pjfmZOWba6TNIVDm+2UDaJmXSOXlasHKfNBs8oo3M0aT50fDEWfKZjXg==",
+          "dev": true,
+          "requires": {
+            "lodash": "^4.17.14"
+          }
+        },
+        "debug": {
+          "version": "3.2.6",
+          "resolved": "https://registry.npmjs.org/debug/-/debug-3.2.6.tgz",
+          "integrity": "sha512-mel+jf7nrtEl5Pn1Qx46zARXKDpBbvzezse7p7LqINmdoIk8PYP5SySaxEmYv6TZ0JyEKA1hsCId6DIhgITtWQ==",
+          "dev": true,
+          "requires": {
+            "ms": "^2.1.1"
+          }
+        },
+        "lodash": {
+          "version": "4.17.15",
+          "resolved": "https://registry.npmjs.org/lodash/-/lodash-4.17.15.tgz",
+          "integrity": "sha512-8xOcRHvCjnocdS5cpwXQXVzmmh5e5+saE2QGoeQmbKmRS6J3VQppPOIt0MnmE+4xlZoumy0GPG0D0MVIQbNA1A==",
+          "dev": true
+        },
+        "ms": {
+          "version": "2.1.2",
+          "resolved": "https://registry.npmjs.org/ms/-/ms-2.1.2.tgz",
+          "integrity": "sha512-sGkPx+VjMtmA6MX27oA4FBFELFCZZ4S4XqeGOXCv68tT+jb3vk/RyaKWP0PTKyWtmLSM0b+adUTEvbs1PEaH2w==",
+          "dev": true
+        },
+        "portfinder": {
+          "version": "1.0.25",
+          "resolved": "https://registry.npmjs.org/portfinder/-/portfinder-1.0.25.tgz",
+          "integrity": "sha512-6ElJnHBbxVA1XSLgBp7G1FiCkQdlqGzuF7DswL5tcea+E8UpuvPU7beVAjjRwCioTS9ZluNbu+ZyRvgTsmqEBg==",
+          "dev": true,
+          "requires": {
+            "async": "^2.6.2",
+            "debug": "^3.1.1",
+            "mkdirp": "^0.5.1"
+          }
+        }
       }
     },
     "http-signature": {
@@ -8605,9 +8656,9 @@
       }
     },
     "opener": {
-      "version": "1.4.3",
-      "resolved": "https://registry.npmjs.org/opener/-/opener-1.4.3.tgz",
-      "integrity": "sha1-XG2ixdflgx6P+jlklQ+NZnSskLg=",
+      "version": "1.5.1",
+      "resolved": "https://registry.npmjs.org/opener/-/opener-1.5.1.tgz",
+      "integrity": "sha512-goYSy5c2UXE4Ra1xixabeVh1guIX/ZV/YokJksb6q2lubWu6UbvPQ20p542/sFIll1nl8JnCyK9oBaOcCWXwvA==",
       "dev": true
     },
     "opn": {
@@ -10134,6 +10185,12 @@
         }
       }
     },
+    "secure-compare": {
+      "version": "3.0.1",
+      "resolved": "https://registry.npmjs.org/secure-compare/-/secure-compare-3.0.1.tgz",
+      "integrity": "sha1-8aAymzCLIh+uN7mXTz1XjQypmeM=",
+      "dev": true
+    },
     "select-hose": {
       "version": "2.0.0",
       "resolved": "https://registry.npmjs.org/select-hose/-/select-hose-2.0.0.tgz",
@@ -11682,20 +11739,12 @@
       }
     },
     "union": {
-      "version": "0.4.6",
-      "resolved": "https://registry.npmjs.org/union/-/union-0.4.6.tgz",
-      "integrity": "sha1-GY+9rrolTniLDvy2MLwR8kopWeA=",
+      "version": "0.5.0",
+      "resolved": "https://registry.npmjs.org/union/-/union-0.5.0.tgz",
+      "integrity": "sha512-N6uOhuW6zO95P3Mel2I2zMsbsanvvtgn6jVqJv4vbVcz/JN0OkL9suomjQGmWtxJQXOCqUJvquc1sMeNz/IwlA==",
       "dev": true,
       "requires": {
-        "qs": "~2.3.3"
-      },
-      "dependencies": {
-        "qs": {
-          "version": "2.3.3",
-          "resolved": "https://registry.npmjs.org/qs/-/qs-2.3.3.tgz",
-          "integrity": "sha1-6eha2+ddoLvkyOBHaghikPhjtAQ=",
-          "dev": true
-        }
+        "qs": "^6.4.0"
       }
     },
     "union-value": {
diff --git a/demo/package.json b/demo/package.json
index 8b89337..e2440eb 100644
--- a/demo/package.json
+++ b/demo/package.json
@@ -70,7 +70,7 @@
     "@types/node": "^10.14.4",
     "codelyzer": "^4.5.0",
     "express": "^4.16.4",
-    "http-server": "^0.11.1",
+    "http-server": "^0.12.0",
     "jest": "^24.5.0",
     "jest-preset-angular": "^6.0.2",
     "protractor": "^5.4.1",