diff --git a/package-lock.json b/package-lock.json
index 98615363..1157288f 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -11,9 +11,9 @@
       "devDependencies": {
         "cssnano": "^7.0.6",
         "postcss-cli": "^11.0.0",
-        "prettier": "^3.3.3",
+        "prettier": "^3.4.1",
         "rimraf": "^6.0.1",
-        "sass": "^1.80.6"
+        "sass": "^1.81.0"
       }
     },
     "node_modules/@isaacs/cliui": {
@@ -1210,10 +1210,11 @@
       }
     },
     "node_modules/immutable": {
-      "version": "4.3.5",
-      "resolved": "https://registry.npmjs.org/immutable/-/immutable-4.3.5.tgz",
-      "integrity": "sha512-8eabxkth9gZatlwl5TBuJnCsoTADlL6ftEr7A4qgdaTsPyreilDSnUk57SO+jfKcNtxPa22U5KK6DSeAYhpBJw==",
-      "dev": true
+      "version": "5.0.3",
+      "resolved": "https://registry.npmjs.org/immutable/-/immutable-5.0.3.tgz",
+      "integrity": "sha512-P8IdPQHq3lA1xVeBRi5VPqUm5HDgKnx0Ru51wZz5mjxHr5n3RWhjIpOFU7ybkUxfB+5IToy+OLaHYDBIWsv+uw==",
+      "dev": true,
+      "license": "MIT"
     },
     "node_modules/is-binary-path": {
       "version": "2.1.0",
@@ -2097,9 +2098,9 @@
       "license": "MIT"
     },
     "node_modules/prettier": {
-      "version": "3.3.3",
-      "resolved": "https://registry.npmjs.org/prettier/-/prettier-3.3.3.tgz",
-      "integrity": "sha512-i2tDNA0O5IrMO757lfrdQZCc2jPNDVntV0m/+4whiDfWaTKfMNgR7Qz0NAeGz/nRqF4m5/6CLzbP4/liHt12Ew==",
+      "version": "3.4.1",
+      "resolved": "https://registry.npmjs.org/prettier/-/prettier-3.4.1.tgz",
+      "integrity": "sha512-G+YdqtITVZmOJje6QkXQWzl3fSfMxFwm1tjTyo9exhkmWSqC4Yhd1+lug++IlR2mvRVAxEDDWYkQdeSztajqgg==",
       "dev": true,
       "license": "MIT",
       "bin": {
@@ -2224,14 +2225,14 @@
       }
     },
     "node_modules/sass": {
-      "version": "1.80.6",
-      "resolved": "https://registry.npmjs.org/sass/-/sass-1.80.6.tgz",
-      "integrity": "sha512-ccZgdHNiBF1NHBsWvacvT5rju3y1d/Eu+8Ex6c21nHp2lZGLBEtuwc415QfiI1PJa1TpCo3iXwwSRjRpn2Ckjg==",
+      "version": "1.81.0",
+      "resolved": "https://registry.npmjs.org/sass/-/sass-1.81.0.tgz",
+      "integrity": "sha512-Q4fOxRfhmv3sqCLoGfvrC9pRV8btc0UtqL9mN6Yrv6Qi9ScL55CVH1vlPP863ISLEEMNLLuu9P+enCeGHlnzhA==",
       "dev": true,
       "license": "MIT",
       "dependencies": {
         "chokidar": "^4.0.0",
-        "immutable": "^4.0.0",
+        "immutable": "^5.0.2",
         "source-map-js": ">=0.6.2 <2.0.0"
       },
       "bin": {
diff --git a/package.json b/package.json
index baced64a..6c114ef0 100644
--- a/package.json
+++ b/package.json
@@ -31,9 +31,9 @@
   "devDependencies": {
     "cssnano": "^7.0.6",
     "postcss-cli": "^11.0.0",
-    "prettier": "^3.3.3",
+    "prettier": "^3.4.1",
     "rimraf": "^6.0.1",
-    "sass": "^1.80.6"
+    "sass": "^1.81.0"
   },
   "scripts": {
     "build-bulma": "sass --style=expanded --source-map bulma.scss css/bulma.css",