diff --git a/_templates/data-viz/package-lock.json b/_templates/data-viz/package-lock.json
index e361b758..71820b2c 100644
--- a/_templates/data-viz/package-lock.json
+++ b/_templates/data-viz/package-lock.json
@@ -24,7 +24,7 @@
         "@rollup/plugin-node-resolve": "^11.0.0",
         "@rollup/plugin-replace": "^4.0.0",
         "autoprefixer": "^10.2.5",
-        "postcss": "^8.2.8",
+        "postcss": "^8.4.31",
         "rollup": "^2.3.4",
         "rollup-plugin-css-only": "^3.1.0",
         "rollup-plugin-livereload": "^2.0.0",
@@ -979,10 +979,16 @@
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-      "version": "3.3.1",
-      "resolved": "https://registry.npmjs.org/nanoid/-/nanoid-3.3.1.tgz",
-      "integrity": "sha512-n6Vs/3KGyxPQd6uO0eH4Bv0ojGSUvuLlIHtC3Y0kEO23YRge8H9x1GCzLn28YX0H66pMkxuaeESFq4tKISKwdw==",
+      "version": "3.3.6",
+      "resolved": "https://registry.npmjs.org/nanoid/-/nanoid-3.3.6.tgz",
+      "integrity": "sha512-BGcqMMJuToF7i1rt+2PWSNVnWIkGCU78jBG3RxO/bZlnZPK2Cmi2QaffxGO/2RvWi9sL+FAiRiXMgsyxQ1DIDA==",
       "dev": true,
+      "funding": [
+        {
+          "type": "github",
+          "url": "https://github.com/sponsors/ai"
+        }
+      ],
       "bin": {
         "nanoid": "bin/nanoid.cjs"
       },
@@ -3713,21 +3719,31 @@
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     },
     "node_modules/postcss": {
-      "version": "8.4.7",
-      "resolved": "https://registry.npmjs.org/postcss/-/postcss-8.4.7.tgz",
-      "integrity": "sha512-L9Ye3r6hkkCeOETQX6iOaWZgjp3LL6Lpqm6EtgbKrgqGGteRMNb9vzBfRL96YOSu8o7x3MfIH9Mo5cPJFGrW6A==",
+      "version": "8.4.31",
+      "resolved": "https://registry.npmjs.org/postcss/-/postcss-8.4.31.tgz",
+      "integrity": "sha512-PS08Iboia9mts/2ygV3eLpY5ghnUcfLV/EXTOW1E2qYxJKGGBUtNjN76FYHnMs36RmARn41bC0AZmn+rR0OVpQ==",
       "dev": true,
+      "funding": [
+        {
+          "type": "opencollective",
+          "url": "https://opencollective.com/postcss/"
+        },
+        {
+          "type": "tidelift",
+          "url": "https://tidelift.com/funding/github/npm/postcss"
+        },
+        {
+          "type": "github",
+          "url": "https://github.com/sponsors/ai"
+        }
+      ],
       "dependencies": {
-        "nanoid": "^3.3.1",
+        "nanoid": "^3.3.6",
         "picocolors": "^1.0.0",
         "source-map-js": "^1.0.2"
       },
       "engines": {
         "node": "^10 || ^12 || >=14"
-      },
-      "funding": {
-        "type": "opencollective",
-        "url": "https://opencollective.com/postcss/"
       }
     },
     "node_modules/postcss-value-parser": {
@@ -4995,9 +5011,9 @@
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     },
     "nanoid": {
-      "version": "3.3.1",
-      "resolved": "https://registry.npmjs.org/nanoid/-/nanoid-3.3.1.tgz",
-      "integrity": "sha512-n6Vs/3KGyxPQd6uO0eH4Bv0ojGSUvuLlIHtC3Y0kEO23YRge8H9x1GCzLn28YX0H66pMkxuaeESFq4tKISKwdw==",
+      "version": "3.3.6",
+      "resolved": "https://registry.npmjs.org/nanoid/-/nanoid-3.3.6.tgz",
+      "integrity": "sha512-BGcqMMJuToF7i1rt+2PWSNVnWIkGCU78jBG3RxO/bZlnZPK2Cmi2QaffxGO/2RvWi9sL+FAiRiXMgsyxQ1DIDA==",
       "dev": true
     },
     "node-releases": {
@@ -6888,12 +6904,12 @@
       "dev": true
     },
     "postcss": {
-      "version": "8.4.7",
-      "resolved": "https://registry.npmjs.org/postcss/-/postcss-8.4.7.tgz",
-      "integrity": "sha512-L9Ye3r6hkkCeOETQX6iOaWZgjp3LL6Lpqm6EtgbKrgqGGteRMNb9vzBfRL96YOSu8o7x3MfIH9Mo5cPJFGrW6A==",
+      "version": "8.4.31",
+      "resolved": "https://registry.npmjs.org/postcss/-/postcss-8.4.31.tgz",
+      "integrity": "sha512-PS08Iboia9mts/2ygV3eLpY5ghnUcfLV/EXTOW1E2qYxJKGGBUtNjN76FYHnMs36RmARn41bC0AZmn+rR0OVpQ==",
       "dev": true,
       "requires": {
-        "nanoid": "^3.3.1",
+        "nanoid": "^3.3.6",
         "picocolors": "^1.0.0",
         "source-map-js": "^1.0.2"
       }
diff --git a/_templates/data-viz/package.json b/_templates/data-viz/package.json
index 0e27cc21..004cae8e 100644
--- a/_templates/data-viz/package.json
+++ b/_templates/data-viz/package.json
@@ -19,7 +19,7 @@
     "@rollup/plugin-node-resolve": "^11.0.0",
     "@rollup/plugin-replace": "^4.0.0",
     "autoprefixer": "^10.2.5",
-    "postcss": "^8.2.8",
+    "postcss": "^8.4.31",
     "rollup": "^2.3.4",
     "rollup-plugin-css-only": "^3.1.0",
     "rollup-plugin-livereload": "^2.0.0",