diff --git a/package-lock.json b/package-lock.json
index 45ad666..5dd4546 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -17,9 +17,18 @@
       "dev": true
     },
     "fast-xml-parser": {
-      "version": "3.17.6",
-      "resolved": "https://registry.npmjs.org/fast-xml-parser/-/fast-xml-parser-3.17.6.tgz",
-      "integrity": "sha512-40WHI/5d2MOzf1sD2bSaTXlPn1lueJLAX6j1xH5dSAr6tNeut8B9ktEL6sjAK9yVON4uNj9//axOdBJUuruCzw==",
+      "version": "4.1.2",
+      "resolved": "https://registry.npmjs.org/fast-xml-parser/-/fast-xml-parser-4.1.2.tgz",
+      "integrity": "sha512-CDYeykkle1LiA/uqQyNwYpFbyF6Axec6YapmpUP+/RHWIoR1zKjocdvNaTsxCxZzQ6v9MLXaSYm9Qq0thv0DHg==",
+      "dev": true,
+      "requires": {
+        "strnum": "^1.0.5"
+      }
+    },
+    "strnum": {
+      "version": "1.0.5",
+      "resolved": "https://registry.npmjs.org/strnum/-/strnum-1.0.5.tgz",
+      "integrity": "sha512-J8bbNyKKXl5qYcR36TIO8W3mVGVHrmmxsd5PAItGkmyzwJvybiw2IVq5nqd0i4LSNSkB/sx9VHllbfFdr9k1JA==",
       "dev": true
     }
   }
diff --git a/package.json b/package.json
index c6b52e4..9154258 100644
--- a/package.json
+++ b/package.json
@@ -10,10 +10,10 @@
   "devDependencies": {
     "@bazel/bazelisk": "1.7.3",
     "@types/node": "14.14.25",
-    "fast-xml-parser": "3.17.6"
+    "fast-xml-parser": "4.1.2"
   },
   "peerDependencies": {
-    "fast-xml-parser": "^3.17.6"
+    "fast-xml-parser": "^4.0.0"
   },
   "scripts": {
     "test": "echo \"Error: no test specified\" && exit 1"