diff --git a/package-lock.json b/package-lock.json
index 16e4a11..3af8778 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,50 +1,60 @@
 {
   "name": "bufx",
   "version": "1.0.5",
-  "lockfileVersion": 1,
+  "lockfileVersion": 3,
   "requires": true,
-  "dependencies": {
-    "argparse": {
-      "version": "1.0.10",
-      "resolved": "https://registry.npmjs.org/argparse/-/argparse-1.0.10.tgz",
-      "integrity": "sha512-o5Roy6tNG4SL/FOkCAN6RzjiakZS25RLYFrcMttJqbdd8BWrnA+fGz57iN5Pb06pvBGvl5gQ0B48dJlslXvoTg==",
-      "requires": {
-        "sprintf-js": "~1.0.2"
+  "packages": {
+    "": {
+      "version": "1.0.5",
+      "license": "MIT",
+      "dependencies": {
+        "js-yaml": "^4.1.1",
+        "prettier": "^2.0.4",
+        "ramda": "^0.27.0",
+        "strip-bom": "^4.0.0"
       }
     },
-    "esprima": {
-      "version": "4.0.1",
-      "resolved": "https://registry.npmjs.org/esprima/-/esprima-4.0.1.tgz",
-      "integrity": "sha512-eGuFFw7Upda+g4p+QHvnW0RyTX/SVeJBDM/gCtMARO0cLuT2HcEKnTPvhjV6aGeqrCB/sbNop0Kszm0jsaWU4A=="
+    "node_modules/argparse": {
+      "version": "2.0.1",
+      "resolved": "https://registry.npmjs.org/argparse/-/argparse-2.0.1.tgz",
+      "integrity": "sha512-8+9WqebbFzpX9OR+Wa6O29asIogeRMzcGtAINdpMHHyAg10f05aSFVBbcEqGf/PXw1EjAZ+q2/bEBg3DvurK3Q==",
+      "license": "Python-2.0"
     },
-    "js-yaml": {
-      "version": "3.13.1",
-      "resolved": "https://registry.npmjs.org/js-yaml/-/js-yaml-3.13.1.tgz",
-      "integrity": "sha512-YfbcO7jXDdyj0DGxYVSlSeQNHbD7XPWvrVWeVUujrQEoZzWJIRrCPoyk6kL6IAjAG2IolMK4T0hNUe0HOUs5Jw==",
-      "requires": {
-        "argparse": "^1.0.7",
-        "esprima": "^4.0.0"
+    "node_modules/js-yaml": {
+      "version": "4.1.1",
+      "resolved": "https://registry.npmjs.org/js-yaml/-/js-yaml-4.1.1.tgz",
+      "integrity": "sha512-qQKT4zQxXl8lLwBtHMWwaTcGfFOZviOJet3Oy/xmGk2gZH677CJM9EvtfdSkgWcATZhj/55JZ0rmy3myCT5lsA==",
+      "license": "MIT",
+      "dependencies": {
+        "argparse": "^2.0.1"
+      },
+      "bin": {
+        "js-yaml": "bin/js-yaml.js"
       }
     },
-    "prettier": {
+    "node_modules/prettier": {
       "version": "2.0.4",
       "resolved": "https://registry.npmjs.org/prettier/-/prettier-2.0.4.tgz",
-      "integrity": "sha512-SVJIQ51spzFDvh4fIbCLvciiDMCrRhlN3mbZvv/+ycjvmF5E73bKdGfU8QDLNmjYJf+lsGnDBC4UUnvTe5OO0w=="
+      "integrity": "sha512-SVJIQ51spzFDvh4fIbCLvciiDMCrRhlN3mbZvv/+ycjvmF5E73bKdGfU8QDLNmjYJf+lsGnDBC4UUnvTe5OO0w==",
+      "bin": {
+        "prettier": "bin-prettier.js"
+      },
+      "engines": {
+        "node": ">=10.13.0"
+      }
     },
-    "ramda": {
+    "node_modules/ramda": {
       "version": "0.27.0",
       "resolved": "https://registry.npmjs.org/ramda/-/ramda-0.27.0.tgz",
       "integrity": "sha512-pVzZdDpWwWqEVVLshWUHjNwuVP7SfcmPraYuqocJp1yo2U1R7P+5QAfDhdItkuoGqIBnBYrtPp7rEPqDn9HlZA=="
     },
-    "sprintf-js": {
-      "version": "1.0.3",
-      "resolved": "https://registry.npmjs.org/sprintf-js/-/sprintf-js-1.0.3.tgz",
-      "integrity": "sha1-BOaSb2YolTVPPdAVIDYzuFcpfiw="
-    },
-    "strip-bom": {
+    "node_modules/strip-bom": {
       "version": "4.0.0",
       "resolved": "https://registry.npmjs.org/strip-bom/-/strip-bom-4.0.0.tgz",
-      "integrity": "sha512-3xurFv5tEgii33Zi8Jtp55wEIILR9eh34FAW00PZf+JnSsTmV/ioewSgQl97JHvgjoRGwPShsWm+IdrxB35d0w=="
+      "integrity": "sha512-3xurFv5tEgii33Zi8Jtp55wEIILR9eh34FAW00PZf+JnSsTmV/ioewSgQl97JHvgjoRGwPShsWm+IdrxB35d0w==",
+      "engines": {
+        "node": ">=8"
+      }
     }
   }
 }
diff --git a/package.json b/package.json
index e5fd4cc..6a559c7 100644
--- a/package.json
+++ b/package.json
@@ -15,7 +15,7 @@
   },
   "main": "bufx.js",
   "dependencies": {
-    "js-yaml": "^3.13.1",
+    "js-yaml": "^4.1.1",
     "prettier": "^2.0.4",
     "ramda": "^0.27.0",
     "strip-bom": "^4.0.0"