diff --git a/package-lock.json b/package-lock.json
index fd061e5..8178c3b 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -247,6 +247,7 @@
       "version": "0.1.4",
       "resolved": "https://registry.npmjs.org/align-text/-/align-text-0.1.4.tgz",
       "integrity": "sha1-DNkKVhCT810KmSVsIrcGlDP60Rc=",
+      "optional": true,
       "requires": {
         "kind-of": "^3.0.2",
         "longest": "^1.0.1",
@@ -4518,7 +4519,8 @@
     "longest": {
       "version": "1.0.1",
       "resolved": "https://registry.npmjs.org/longest/-/longest-1.0.1.tgz",
-      "integrity": "sha1-MKCy2jj3N3DoKUoNIuZiXtd9AJc="
+      "integrity": "sha1-MKCy2jj3N3DoKUoNIuZiXtd9AJc=",
+      "optional": true
     },
     "loose-envify": {
       "version": "1.3.1",
@@ -6023,9 +6025,9 @@
       }
     },
     "remap-istanbul": {
-      "version": "0.11.1",
-      "resolved": "https://registry.npmjs.org/remap-istanbul/-/remap-istanbul-0.11.1.tgz",
-      "integrity": "sha512-Itv3XvYjD6G+9xDzAeFohx4GUwbFjfqFt0UXlC826jHR18E49fEiEGqZUxUASwMq4z7wwUv2H9/XF2d6qj0iaQ==",
+      "version": "0.12.0",
+      "resolved": "https://registry.npmjs.org/remap-istanbul/-/remap-istanbul-0.12.0.tgz",
+      "integrity": "sha512-lpA+zkWfT7v81k76asd+w82+dnbBTmBEsyuBVQ28armnOqsZZO23uI4ZCBGd8TtIb9Tq4CauswB+A44cbkuiMA==",
       "dev": true,
       "requires": {
         "amdefine": "^1.0.0",
diff --git a/package.json b/package.json
index 5c891f7..0a1d546 100644
--- a/package.json
+++ b/package.json
@@ -64,7 +64,7 @@
         "lint-staged": "^7.2.0",
         "mocha": "^5.1.1",
         "prettier": "^1.12.1",
-        "remap-istanbul": "^0.11.1",
+        "remap-istanbul": "^0.12.0",
         "sinon": "^6.0.0",
         "sinon-chai": "^3.0.0",
         "typings": "^2.1.1"