diff --git a/package-lock.json b/package-lock.json
index d00e498..b82e597 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -7,7 +7,7 @@
       "name": "mapfile-generator",
       "devDependencies": {
         "neostandard": "^0.12",
-        "sass": "^1.97",
+        "sass": "^1.100",
         "webpack-cli": "^6.0"
       }
     },
@@ -2232,16 +2232,16 @@
       }
     },
     "node_modules/chokidar": {
-      "version": "4.0.3",
-      "resolved": "https://registry.npmjs.org/chokidar/-/chokidar-4.0.3.tgz",
-      "integrity": "sha512-Qgzu8kfBvo+cA4962jnP1KkS6Dop5NS6g7R5LFYJr4b8Ub94PPQXUksCw9PvXoeXPRRddRNC5C1JQUR2SMGtnA==",
+      "version": "5.0.0",
+      "resolved": "https://registry.npmjs.org/chokidar/-/chokidar-5.0.0.tgz",
+      "integrity": "sha512-TQMmc3w+5AxjpL8iIiwebF73dRDF4fBIieAqGn9RGCWaEVwQ6Fb2cGe31Yns0RRIzii5goJ1Y7xbMwo1TxMplw==",
       "dev": true,
       "license": "MIT",
       "dependencies": {
-        "readdirp": "^4.0.1"
+        "readdirp": "^5.0.0"
       },
       "engines": {
-        "node": ">= 14.16.0"
+        "node": ">= 20.19.0"
       },
       "funding": {
         "url": "https://paulmillr.com/funding/"
@@ -5474,13 +5474,13 @@
       "license": "MIT"
     },
     "node_modules/readdirp": {
-      "version": "4.1.2",
-      "resolved": "https://registry.npmjs.org/readdirp/-/readdirp-4.1.2.tgz",
-      "integrity": "sha512-GDhwkLfywWL2s6vEjyhri+eXmfH6j1L7JE27WhqLeYzoh/A3DBaYGEj2H/HFZCn/kMfim73FXxEJTw06WtxQwg==",
+      "version": "5.0.0",
+      "resolved": "https://registry.npmjs.org/readdirp/-/readdirp-5.0.0.tgz",
+      "integrity": "sha512-9u/XQ1pvrQtYyMpZe7DXKv2p5CNvyVwzUB6uhLAnQwHMSgKMBR62lc7AHljaeteeHXn11XTAaLLUVZYVZyuRBQ==",
       "dev": true,
       "license": "MIT",
       "engines": {
-        "node": ">= 14.18.0"
+        "node": ">= 20.19.0"
       },
       "funding": {
         "type": "individual",
@@ -5737,21 +5737,21 @@
       "peer": true
     },
     "node_modules/sass": {
-      "version": "1.97.3",
-      "resolved": "https://registry.npmjs.org/sass/-/sass-1.97.3.tgz",
-      "integrity": "sha512-fDz1zJpd5GycprAbu4Q2PV/RprsRtKC/0z82z0JLgdytmcq0+ujJbJ/09bPGDxCLkKY3Np5cRAOcWiVkLXJURg==",
+      "version": "1.100.0",
+      "resolved": "https://registry.npmjs.org/sass/-/sass-1.100.0.tgz",
+      "integrity": "sha512-B5j0rYMlinhhOo9tjQebMVVn0TfyXAF+wB3b2ggZUuJ/is/Y+7+JGjirAMxHZ9Z3hIP98NPfamlAkBHa1lAaXQ==",
       "dev": true,
       "license": "MIT",
       "dependencies": {
-        "chokidar": "^4.0.0",
-        "immutable": "^5.0.2",
+        "chokidar": "^5.0.0",
+        "immutable": "^5.1.5",
         "source-map-js": ">=0.6.2 <2.0.0"
       },
       "bin": {
         "sass": "sass.js"
       },
       "engines": {
-        "node": ">=14.0.0"
+        "node": ">=20.19.0"
       },
       "optionalDependencies": {
         "@parcel/watcher": "^2.4.1"
diff --git a/package.json b/package.json
index 58d2853..92d4fa1 100644
--- a/package.json
+++ b/package.json
@@ -2,7 +2,7 @@
   "name": "mapfile-generator",
   "devDependencies": {
     "neostandard": "^0.12",
-    "sass": "^1.97",
+    "sass": "^1.100",
     "webpack-cli": "^6.0"
   },
   "scripts": {