diff --git a/themes/systemli/package-lock.json b/themes/systemli/package-lock.json
index 89efb09..c732d85 100644
--- a/themes/systemli/package-lock.json
+++ b/themes/systemli/package-lock.json
@@ -9,7 +9,7 @@
       "dependencies": {
         "@fullhuman/postcss-purgecss": "^4.0.3",
         "autoprefixer": "^10.4.0",
-        "postcss": "^8.3.11",
+        "postcss": "^8.4.31",
         "postcss-cli": "^9.0.2",
         "postcss-import": "^14.0.2",
         "tailwindcss": "^1.9.6"
@@ -923,20 +923,30 @@
       }
     },
     "node_modules/postcss": {
-      "version": "8.3.11",
-      "resolved": "https://registry.npmjs.org/postcss/-/postcss-8.3.11.tgz",
-      "integrity": "sha512-hCmlUAIlUiav8Xdqw3Io4LcpA1DOt7h3LSTAC4G6JGHFFaWzI6qvFt9oilvl8BmkbBRX1IhM90ZAmpk68zccQA==",
+      "version": "8.4.31",
+      "resolved": "https://registry.npmjs.org/postcss/-/postcss-8.4.31.tgz",
+      "integrity": "sha512-PS08Iboia9mts/2ygV3eLpY5ghnUcfLV/EXTOW1E2qYxJKGGBUtNjN76FYHnMs36RmARn41bC0AZmn+rR0OVpQ==",
+      "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": "^3.1.30",
+        "nanoid": "^3.3.6",
         "picocolors": "^1.0.0",
-        "source-map-js": "^0.6.2"
+        "source-map-js": "^1.0.2"
       },
       "engines": {
         "node": "^10 || ^12 || >=14"
-      },
-      "funding": {
-        "type": "opencollective",
-        "url": "https://opencollective.com/postcss/"
       }
     },
     "node_modules/postcss-cli": {
@@ -1316,9 +1326,9 @@
       }
     },
     "node_modules/source-map-js": {
-      "version": "0.6.2",
-      "resolved": "https://registry.npmjs.org/source-map-js/-/source-map-js-0.6.2.tgz",
-      "integrity": "sha512-/3GptzWzu0+0MBQFrDKzw/DvvMTUORvgY6k6jd/VS6iCR4RDTKWH6v6WPwQoUO8667uQEf9Oe38DxAYWY5F/Ug==",
+      "version": "1.0.2",
+      "resolved": "https://registry.npmjs.org/source-map-js/-/source-map-js-1.0.2.tgz",
+      "integrity": "sha512-R0XvVJ9WusLiqTCEiGCmICCMplcCkIwwR11mOSD9CR5u+IXYdiseeEuXCVAjS54zqwkLcPNnmU4OeJ6tUrWhDw==",
       "engines": {
         "node": ">=0.10.0"
       }
diff --git a/themes/systemli/package.json b/themes/systemli/package.json
index 489b6a2..bba71fb 100644
--- a/themes/systemli/package.json
+++ b/themes/systemli/package.json
@@ -5,7 +5,7 @@
   "dependencies": {
     "@fullhuman/postcss-purgecss": "^4.0.3",
     "autoprefixer": "^10.4.0",
-    "postcss": "^8.3.11",
+    "postcss": "^8.4.31",
     "postcss-cli": "^9.0.2",
     "postcss-import": "^14.0.2",
     "tailwindcss": "^1.9.6"