diff --git a/package-lock.json b/package-lock.json
index f18819f..f9da09e 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -19,7 +19,7 @@
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@@ -62,12 +62,265 @@
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+            "braces": "^2.3.1",
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@@ -80,9 +333,9 @@
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@@ -201,6 +454,11 @@
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@@ -352,6 +610,16 @@
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-      "resolved": "https://registry.npmjs.org/bl/-/bl-0.8.2.tgz",
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@@ -386,7 +654,7 @@
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@@ -406,30 +674,13 @@
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+          "integrity": "sha1-JP1iAaR4LPUFYcgQJ2r8fRLXEZU=",
+          "requires": {
+            "kind-of": "^3.0.2"
+          }
+        }
       }
     },
     "tr46": {
@@ -6921,6 +7589,11 @@
           "version": "0.1.4",
           "resolved": "https://registry.npmjs.org/has-values/-/has-values-0.1.4.tgz",
           "integrity": "sha1-bWHeldkd/Km5oCCJrThL/49it3E="
+        },
+        "isobject": {
+          "version": "3.0.1",
+          "resolved": "https://registry.npmjs.org/isobject/-/isobject-3.0.1.tgz",
+          "integrity": "sha1-TkMekrEalzFjaqH5yNHMvP2reN8="
         }
       }
     },
@@ -6941,7 +7614,7 @@
     },
     "util": {
       "version": "0.10.3",
-      "resolved": "https://registry.npmjs.org/util/-/util-0.10.3.tgz",
+      "resolved": "http://registry.npmjs.org/util/-/util-0.10.3.tgz",
       "integrity": "sha1-evsa/lCAUkZInj23/g7TeTNqwPk=",
       "requires": {
         "inherits": "2.0.1"
@@ -6994,9 +7667,9 @@
       "integrity": "sha1-tSQ9jz7BqjXxNkYFvA0QNuMKtp8="
     },
     "ws": {
-      "version": "5.1.1",
-      "resolved": "https://registry.npmjs.org/ws/-/ws-5.1.1.tgz",
-      "integrity": "sha512-bOusvpCb09TOBLbpMKszd45WKC2KPtxiyiHanv+H2DE3Az+1db5a/L7sVJZVDPUC1Br8f0SKRr1KjLpD1U/IAw==",
+      "version": "5.2.2",
+      "resolved": "https://registry.npmjs.org/ws/-/ws-5.2.2.tgz",
+      "integrity": "sha512-jaHFD6PFv6UgoIVda6qZllptQsMlDEJkTQcybzzXDYM1XO9Y8em691FGMPmM46WGyLU4z9KMgQN+qrux/nhlHA==",
       "requires": {
         "async-limiter": "~1.0.0"
       }
@@ -7007,12 +7680,13 @@
       "integrity": "sha1-7vax8ZjByN6vrYsXZaBNrUoBxak="
     },
     "zwitterion": {
-      "version": "0.27.3",
-      "resolved": "https://registry.npmjs.org/zwitterion/-/zwitterion-0.27.3.tgz",
-      "integrity": "sha512-wMUrjBGYU567nNuQ8lVpfTRCx8VJRYqssnzqc9EG9ctqON/j/RpBa309qE/ngbYkZBAYSs+sdqvcQWcy7iRfIQ==",
+      "version": "0.28.1",
+      "resolved": "https://registry.npmjs.org/zwitterion/-/zwitterion-0.28.1.tgz",
+      "integrity": "sha512-PHLUJIt6jNNYzyN/cvcyf0IywLQ/5GzYvMcDe6QUYipftBh98SaTsCgEZKC9PF+QFEImgUa/goyMlQvODDjmlw==",
       "requires": {
         "assert-es-module": "0.0.0",
         "babel-core": "6.26.3",
+        "babel-plugin-syntax-dynamic-import": "6.18.0",
         "babel-plugin-syntax-export-extensions": "6.13.0",
         "babel-preset-typescript": "7.0.0-alpha.19",
         "chokidar": "2.0.3",
@@ -7030,7 +7704,7 @@
         "util-es-module": "0.0.0",
         "wast2wasm": "0.0.1",
         "whatwg-url": "6.4.0",
-        "ws": "5.1.1"
+        "ws": "5.2.2"
       }
     }
   }
diff --git a/package.json b/package.json
index d08a010..6b2ac64 100644
--- a/package.json
+++ b/package.json
@@ -12,6 +12,6 @@
   "dependencies": {
     "lit-html": "0.9.0",
     "redux": "4.0.1",
-    "zwitterion": "0.27.3"
+    "zwitterion": "0.28.1"
   }
 }