diff --git a/package-lock.json b/package-lock.json
index e003df6..787824c 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -997,9 +997,9 @@
       "dev": true
     },
     "@zeit/ncc": {
-      "version": "0.20.5",
-      "resolved": "https://registry.npmjs.org/@zeit/ncc/-/ncc-0.20.5.tgz",
-      "integrity": "sha512-XU6uzwvv95DqxciQx+aOLhbyBx/13ky+RK1y88Age9Du3BlA4mMPCy13BGjayOrrumOzlq1XV3SD/BWiZENXlw==",
+      "version": "0.21.1",
+      "resolved": "https://registry.npmjs.org/@zeit/ncc/-/ncc-0.21.1.tgz",
+      "integrity": "sha512-M9WzgquSOt2nsjRkYM9LRylBLmmlwNCwYbm3Up3PDEshfvdmIfqpFNSK8EJvR18NwZjGHE5z2avlDtYQx2JQnw==",
       "dev": true
     },
     "JSONStream": {
diff --git a/package.json b/package.json
index ecff1d0..c478447 100644
--- a/package.json
+++ b/package.json
@@ -43,7 +43,7 @@
     },
     "devDependencies": {
         "@types/jest": "^24.0.18",
-        "@zeit/ncc": "^0.20.5",
+        "@zeit/ncc": "^0.21.1",
         "jest": "^24.9.0",
         "jest-when": "^2.7.0",
         "semantic-release": "^15.13.24"