diff --git a/package-lock.json b/package-lock.json
index b4be643d..96c7e156 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -380,6 +380,7 @@
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       "integrity": "sha1-DNkKVhCT810KmSVsIrcGlDP60Rc=",
       "dev": true,
+      "optional": true,
       "requires": {
         "kind-of": "^3.0.2",
         "longest": "^1.0.1",
@@ -569,7 +570,8 @@
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       "resolved": "https://registry.npmjs.org/assert-plus/-/assert-plus-1.0.0.tgz",
       "integrity": "sha1-8S4PPF13sLHN2RRpQuTpbB5N1SU=",
-      "dev": true
+      "dev": true,
+      "optional": true
     },
     "assign-symbols": {
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@@ -2282,6 +2284,7 @@
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       "integrity": "sha1-E+v+d4oDIFz+A3UUgeu0szAMEmo=",
       "dev": true,
+      "optional": true,
       "requires": {
         "inherits": "~2.0.0"
       }
@@ -2907,6 +2910,7 @@
       "resolved": "https://registry.npmjs.org/combined-stream/-/combined-stream-1.0.6.tgz",
       "integrity": "sha1-cj599ugBrFYTETp+RFqbactjKBg=",
       "dev": true,
+      "optional": true,
       "requires": {
         "delayed-stream": "~1.0.0"
       }
@@ -2989,7 +2993,8 @@
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       "resolved": "https://registry.npmjs.org/console-control-strings/-/console-control-strings-1.1.0.tgz",
       "integrity": "sha1-PXz0Rk22RG6mRL9LOVB/mFEAjo4=",
-      "dev": true
+      "dev": true,
+      "optional": true
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     "convert-source-map": {
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@@ -3249,7 +3254,8 @@
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       "integrity": "sha1-3zrhmayt+31ECqrgsp4icrJOxhk=",
-      "dev": true
+      "dev": true,
+      "optional": true
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@@ -3819,7 +3825,8 @@
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       "resolved": "https://registry.npmjs.org/extsprintf/-/extsprintf-1.3.0.tgz",
       "integrity": "sha1-lpGEQOMEGnpBT4xS48V06zw+HgU=",
-      "dev": true
+      "dev": true,
+      "optional": true
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     "fast-deep-equal": {
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@@ -5413,7 +5420,8 @@
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       "resolved": "https://registry.npmjs.org/longest/-/longest-1.0.1.tgz",
       "integrity": "sha1-MKCy2jj3N3DoKUoNIuZiXtd9AJc=",
-      "dev": true
+      "dev": true,
+      "optional": true
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@@ -6493,13 +6501,15 @@
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       "resolved": "https://registry.npmjs.org/mime-db/-/mime-db-1.35.0.tgz",
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-      "dev": true
+      "dev": true,
+      "optional": true
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     "mime-types": {
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       "resolved": "https://registry.npmjs.org/mime-types/-/mime-types-2.1.19.tgz",
       "integrity": "sha512-P1tKYHVSZ6uFo26mtnve4HQFE3koh1UWVkp8YUC+ESBHe945xWSoXuHHiGarDqcEZ+whpCDnlNw5LON0kLo+sw==",
       "dev": true,
+      "optional": true,
       "requires": {
         "mime-db": "~1.35.0"
       }
@@ -6881,6 +6891,7 @@
           "version": "0.1.4",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "kind-of": "^3.0.2",
             "longest": "^1.0.1",
@@ -7823,7 +7834,8 @@
         "longest": {
           "version": "1.0.1",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "lru-cache": {
           "version": "4.1.3",
@@ -9905,9 +9917,9 @@
       "dev": true
     },
     "rollup": {
-      "version": "0.64.1",
-      "resolved": "https://registry.npmjs.org/rollup/-/rollup-0.64.1.tgz",
-      "integrity": "sha512-+ThdVXrvonJdOTzyybMBipP0uz605Z8AnzWVY3rf+cSGnLO7uNkJBlN+9jXqWOomkvumXfm/esmBpA5d53qm7g==",
+      "version": "0.66.0",
+      "resolved": "https://registry.npmjs.org/rollup/-/rollup-0.66.0.tgz",
+      "integrity": "sha512-WOkVBSdod3phCSAri5Q579JufeAzJTi43L4oAHzFtjRWJTv2LIszYCU3K9TLMEsVksMY93EwgWCb+hpKRhQwGg==",
       "dev": true,
       "requires": {
         "@types/estree": "0.0.39",
@@ -10546,6 +10558,7 @@
       "resolved": "https://registry.npmjs.org/tar/-/tar-2.2.1.tgz",
       "integrity": "sha1-jk0qJWwOIYXGsYrWlK7JaLg8sdE=",
       "dev": true,
+      "optional": true,
       "requires": {
         "block-stream": "*",
         "fstream": "^1.0.2",
diff --git a/package.json b/package.json
index 5478f434..11085d65 100644
--- a/package.json
+++ b/package.json
@@ -78,7 +78,7 @@
     "npm-run-all": "^4.1.3",
     "nyc": "^12.0.2",
     "pretty-bytes": "^5.1.0",
-    "rollup": "^0.65.0",
+    "rollup": "^0.66.0",
     "rollup-plugin-babel": "^3.0.7",
     "typescript": "^3.0.1"
   },