diff --git a/package.json b/package.json
index a33321c7..a32d5eee 100644
--- a/package.json
+++ b/package.json
@@ -10,7 +10,7 @@
     "build": "node build.js"
   },
   "dependencies": {
-    "js-yaml": "^4.1.0",
+    "js-yaml": "^4.2.0",
     "sha3": "^2.1.4"
   }
 }
diff --git a/yarn.lock b/yarn.lock
index a92f4113..a2030778 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -2,39 +2,33 @@
 # yarn lockfile v1
 
 
-"argparse@^2.0.1":
-  "integrity" "sha512-8+9WqebbFzpX9OR+Wa6O29asIogeRMzcGtAINdpMHHyAg10f05aSFVBbcEqGf/PXw1EjAZ+q2/bEBg3DvurK3Q=="
-  "resolved" "https://registry.npmjs.org/argparse/-/argparse-2.0.1.tgz"
-  "version" "2.0.1"
+argparse@^2.0.1:
+  version "2.0.1"
+  resolved "https://registry.npmjs.org/argparse/-/argparse-2.0.1.tgz"
 
-"base64-js@^1.3.1":
-  "integrity" "sha512-AKpaYlHn8t4SVbOHCy+b5+KKgvR4vrsD8vbvrbiQJps7fKDTkjkDry6ji0rUJjC0kzbNePLwzxq8iypo41qeWA=="
-  "resolved" "https://registry.npmjs.org/base64-js/-/base64-js-1.5.1.tgz"
-  "version" "1.5.1"
+base64-js@^1.3.1:
+  version "1.5.1"
+  resolved "https://registry.npmjs.org/base64-js/-/base64-js-1.5.1.tgz"
 
-"buffer@6.0.3":
-  "integrity" "sha512-FTiCpNxtwiZZHEZbcbTIcZjERVICn9yq/pDFkTl95/AxzD1naBctN7YO68riM/gLSDY7sdrMby8hofADYuuqOA=="
-  "resolved" "https://registry.npmjs.org/buffer/-/buffer-6.0.3.tgz"
-  "version" "6.0.3"
+buffer@6.0.3:
+  version "6.0.3"
+  resolved "https://registry.npmjs.org/buffer/-/buffer-6.0.3.tgz"
   dependencies:
-    "base64-js" "^1.3.1"
-    "ieee754" "^1.2.1"
+    base64-js "^1.3.1"
+    ieee754 "^1.2.1"
 
-"ieee754@^1.2.1":
-  "integrity" "sha512-dcyqhDvX1C46lXZcVqCpK+FtMRQVdIMN6/Df5js2zouUsqG7I6sFxitIC+7KYK29KdXOLHdu9zL4sFnoVQnqaA=="
-  "resolved" "https://registry.npmjs.org/ieee754/-/ieee754-1.2.1.tgz"
-  "version" "1.2.1"
+ieee754@^1.2.1:
+  version "1.2.1"
+  resolved "https://registry.npmjs.org/ieee754/-/ieee754-1.2.1.tgz"
 
-"js-yaml@^4.1.0":
-  "integrity" "sha512-wpxZs9NoxZaJESJGIZTyDEaYpl0FKSA+FB9aJiyemKhMwkxQg63h4T1KJgUGHpTqPDNRcmmYLugrRjJlBtWvRA=="
-  "resolved" "https://registry.npmjs.org/js-yaml/-/js-yaml-4.1.0.tgz"
-  "version" "4.1.0"
+js-yaml@^4.2.0:
+  version "4.2.0"
+  resolved "https://registry.yarnpkg.com/js-yaml/-/js-yaml-4.2.0.tgz#2bd9e85682dd91bd469afb809d816043b3d49524"
   dependencies:
-    "argparse" "^2.0.1"
+    argparse "^2.0.1"
 
-"sha3@^2.1.4":
-  "integrity" "sha512-S8cNxbyb0UGUM2VhRD4Poe5N58gJnJsLJ5vC7FYWGUmGhcsj4++WaIOBFVDxlG0W3To6xBuiRh+i0Qp2oNCOtg=="
-  "resolved" "https://registry.npmjs.org/sha3/-/sha3-2.1.4.tgz"
-  "version" "2.1.4"
+sha3@^2.1.4:
+  version "2.1.4"
+  resolved "https://registry.npmjs.org/sha3/-/sha3-2.1.4.tgz"
   dependencies:
-    "buffer" "6.0.3"
+    buffer "6.0.3"