diff --git a/package-lock.json b/package-lock.json
index 686c109..b10486a 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -24,7 +24,7 @@
         "eleventy-plugin-svg-sprite": "^2.4.6",
         "esbuild": "0.25.0",
         "esbuild-sass-plugin": "^3.3.1",
-        "js-yaml": "^4.1.1",
+        "js-yaml": "^5.4.3",
         "luxon": "^3.5.0",
         "markdown-it": "^14.1.0",
         "markdown-it-named-headings": "^1.1.0",
@@ -7396,16 +7396,26 @@
       "license": "MIT"
     },
     "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==",
+      "version": "5.4.3",
+      "resolved": "https://registry.npmjs.org/js-yaml/-/js-yaml-5.4.3.tgz",
+      "integrity": "sha512-yzzNtgczwgoVHNigCyKTXcQJU4Y8t/ikU4UxXW0BvrLfHTGWZhsNcOT2s/a7vn81/4KqVnNmHjaUEPlvWnNwVw==",
       "dev": true,
+      "funding": [
+        {
+          "type": "github",
+          "url": "https://github.com/sponsors/puzrin"
+        },
+        {
+          "type": "github",
+          "url": "https://github.com/sponsors/nodeca"
+        }
+      ],
       "license": "MIT",
       "dependencies": {
         "argparse": "^2.0.1"
       },
       "bin": {
-        "js-yaml": "bin/js-yaml.js"
+        "js-yaml": "bin/js-yaml.mjs"
       }
     },
     "node_modules/jsesc": {
@@ -11980,6 +11990,29 @@
         "node": ">=12"
       }
     },
+    "node_modules/svg-sprite/node_modules/js-yaml": {
+      "version": "4.3.2",
+      "resolved": "https://registry.npmjs.org/js-yaml/-/js-yaml-4.3.2.tgz",
+      "integrity": "sha512-SFNOvSJ+Dgf/9An904Yx+CgSlIPCkIpao4qo51lpee25TIRejdH3rhR4EZMGoNx3/TP3O+wzWuiTFl4sqbltzA==",
+      "dev": true,
+      "funding": [
+        {
+          "type": "github",
+          "url": "https://github.com/sponsors/puzrin"
+        },
+        {
+          "type": "github",
+          "url": "https://github.com/sponsors/nodeca"
+        }
+      ],
+      "license": "MIT",
+      "dependencies": {
+        "argparse": "^2.0.1"
+      },
+      "bin": {
+        "js-yaml": "bin/js-yaml.js"
+      }
+    },
     "node_modules/svgo": {
       "version": "2.8.2",
       "resolved": "https://registry.npmjs.org/svgo/-/svgo-2.8.2.tgz",
@@ -18115,9 +18148,9 @@
       "integrity": "sha512-RdJUflcE3cUzKiMqQgsCu06FPu9UdIJO0beYbPhHN4k6apgJtifcoCtT9bcxOpYBtpD2kCM6Sbzg4CausW/PKQ=="
     },
     "js-yaml": {
-      "version": "4.1.1",
-      "resolved": "https://registry.npmjs.org/js-yaml/-/js-yaml-4.1.1.tgz",
-      "integrity": "sha512-qQKT4zQxXl8lLwBtHMWwaTcGfFOZviOJet3Oy/xmGk2gZH677CJM9EvtfdSkgWcATZhj/55JZ0rmy3myCT5lsA==",
+      "version": "5.4.3",
+      "resolved": "https://registry.npmjs.org/js-yaml/-/js-yaml-5.4.3.tgz",
+      "integrity": "sha512-yzzNtgczwgoVHNigCyKTXcQJU4Y8t/ikU4UxXW0BvrLfHTGWZhsNcOT2s/a7vn81/4KqVnNmHjaUEPlvWnNwVw==",
       "dev": true,
       "requires": {
         "argparse": "^2.0.1"
@@ -21386,6 +21419,17 @@
         "winston": "^3.11.0",
         "xpath": "^0.0.34",
         "yargs": "^17.7.2"
+      },
+      "dependencies": {
+        "js-yaml": {
+          "version": "4.3.2",
+          "resolved": "https://registry.npmjs.org/js-yaml/-/js-yaml-4.3.2.tgz",
+          "integrity": "sha512-SFNOvSJ+Dgf/9An904Yx+CgSlIPCkIpao4qo51lpee25TIRejdH3rhR4EZMGoNx3/TP3O+wzWuiTFl4sqbltzA==",
+          "dev": true,
+          "requires": {
+            "argparse": "^2.0.1"
+          }
+        }
       }
     },
     "svgo": {
diff --git a/package.json b/package.json
index 349cf01..8737896 100644
--- a/package.json
+++ b/package.json
@@ -38,7 +38,7 @@
     "eleventy-plugin-svg-sprite": "^2.4.6",
     "esbuild": "0.25.0",
     "esbuild-sass-plugin": "^3.3.1",
-    "js-yaml": "^4.1.1",
+    "js-yaml": "^5.4.3",
     "luxon": "^3.5.0",
     "markdown-it": "^14.1.0",
     "markdown-it-named-headings": "^1.1.0",