diff --git a/.licenses/npm/js-yaml.dep.yml b/.licenses/npm/js-yaml.dep.yml
index 86be84ad..f495d93d 100644
--- a/.licenses/npm/js-yaml.dep.yml
+++ b/.licenses/npm/js-yaml.dep.yml
@@ -1,9 +1,9 @@
 ---
 name: js-yaml
-version: 4.1.0
+version: 4.1.1
 type: npm
 summary: YAML 1.2 parser and serializer
-homepage: https://github.com/nodeca/js-yaml
+homepage:
 license: mit
 licenses:
 - sources: LICENSE
diff --git a/dist/index.js b/dist/index.js
index 35bb1084..faba4269 100644
--- a/dist/index.js
+++ b/dist/index.js
@@ -13162,6 +13162,22 @@ function charFromCodepoint(c) {
   );
 }
 
+// set a property of a literal object, while protecting against prototype pollution,
+// see https://github.com/nodeca/js-yaml/issues/164 for more details
+function setProperty(object, key, value) {
+  // used for this specific key only because Object.defineProperty is slow
+  if (key === '__proto__') {
+    Object.defineProperty(object, key, {
+      configurable: true,
+      enumerable: true,
+      writable: true,
+      value: value
+    });
+  } else {
+    object[key] = value;
+  }
+}
+
 var simpleEscapeCheck = new Array(256); // integer, for fast access
 var simpleEscapeMap = new Array(256);
 for (var i = 0; i < 256; i++) {
@@ -13340,7 +13356,7 @@ function mergeMappings(state, destination, source, overridableKeys) {
     key = sourceKeys[index];
 
     if (!_hasOwnProperty.call(destination, key)) {
-      destination[key] = source[key];
+      setProperty(destination, key, source[key]);
       overridableKeys[key] = true;
     }
   }
@@ -13400,17 +13416,7 @@ function storeMappingPair(state, _result, overridableKeys, keyTag, keyNode, valu
       throwError(state, 'duplicated mapping key');
     }
 
-    // used for this specific key only because Object.defineProperty is slow
-    if (keyNode === '__proto__') {
-      Object.defineProperty(_result, keyNode, {
-        configurable: true,
-        enumerable: true,
-        writable: true,
-        value: valueNode
-      });
-    } else {
-      _result[keyNode] = valueNode;
-    }
+    setProperty(_result, keyNode, valueNode);
     delete overridableKeys[keyNode];
   }