diff --git a/books-app/package-lock.json b/books-app/package-lock.json
index 13df21d2..bf9d8845 100644
--- a/books-app/package-lock.json
+++ b/books-app/package-lock.json
@@ -12,7 +12,7 @@
       },
       "devDependencies": {
         "autoprefixer": "^10.4.0",
-        "postcss": "^8.4.4",
+        "postcss": "^8.4.31",
         "tailwindcss": "^3.0.0"
       }
     },
@@ -926,9 +926,15 @@
       "dev": true
     },
     "node_modules/nanoid": {
-      "version": "3.2.0",
-      "resolved": "https://registry.npmjs.org/nanoid/-/nanoid-3.2.0.tgz",
-      "integrity": "sha512-fmsZYa9lpn69Ad5eDn7FMcnnSR+8R34W9qJEijxYhTbfOWzr22n1QxCMzXLK+ODyW2973V3Fux959iQoUxzUIA==",
+      "version": "3.3.6",
+      "resolved": "https://registry.npmjs.org/nanoid/-/nanoid-3.3.6.tgz",
+      "integrity": "sha512-BGcqMMJuToF7i1rt+2PWSNVnWIkGCU78jBG3RxO/bZlnZPK2Cmi2QaffxGO/2RvWi9sL+FAiRiXMgsyxQ1DIDA==",
+      "funding": [
+        {
+          "type": "github",
+          "url": "https://github.com/sponsors/ai"
+        }
+      ],
       "bin": {
         "nanoid": "bin/nanoid.cjs"
       },
@@ -985,6 +991,23 @@
         }
       }
     },
+    "node_modules/next/node_modules/postcss": {
+      "version": "8.4.5",
+      "resolved": "https://registry.npmjs.org/postcss/-/postcss-8.4.5.tgz",
+      "integrity": "sha512-jBDboWM8qpaqwkMwItqTQTiFikhs/67OYVvblFFTM7MrZjt6yMKd6r2kgXizEbTTljacm4NldIlZnhbjr84QYg==",
+      "dependencies": {
+        "nanoid": "^3.1.30",
+        "picocolors": "^1.0.0",
+        "source-map-js": "^1.0.1"
+      },
+      "engines": {
+        "node": "^10 || ^12 || >=14"
+      },
+      "funding": {
+        "type": "opencollective",
+        "url": "https://opencollective.com/postcss/"
+      }
+    },
     "node_modules/node-releases": {
       "version": "2.0.1",
       "resolved": "https://registry.npmjs.org/node-releases/-/node-releases-2.0.1.tgz",
@@ -1107,20 +1130,31 @@
       }
     },
     "node_modules/postcss": {
-      "version": "8.4.5",
-      "resolved": "https://registry.npmjs.org/postcss/-/postcss-8.4.5.tgz",
-      "integrity": "sha512-jBDboWM8qpaqwkMwItqTQTiFikhs/67OYVvblFFTM7MrZjt6yMKd6r2kgXizEbTTljacm4NldIlZnhbjr84QYg==",
+      "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": "^3.1.30",
+        "nanoid": "^3.3.6",
         "picocolors": "^1.0.0",
-        "source-map-js": "^1.0.1"
+        "source-map-js": "^1.0.2"
       },
       "engines": {
         "node": "^10 || ^12 || >=14"
-      },
-      "funding": {
-        "type": "opencollective",
-        "url": "https://opencollective.com/postcss/"
       }
     },
     "node_modules/postcss-js": {
@@ -1341,9 +1375,9 @@
       }
     },
     "node_modules/source-map-js": {
-      "version": "1.0.1",
-      "resolved": "https://registry.npmjs.org/source-map-js/-/source-map-js-1.0.1.tgz",
-      "integrity": "sha512-4+TN2b3tqOCd/kaGRJ/sTYA0tR0mdXx26ipdolxcwtJVqEnqNYvlCAt1q3ypy4QMlYus+Zh34RNtYLoq2oQ4IA==",
+      "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"
       }
@@ -2241,9 +2275,9 @@
       "dev": true
     },
     "nanoid": {
-      "version": "3.2.0",
-      "resolved": "https://registry.npmjs.org/nanoid/-/nanoid-3.2.0.tgz",
-      "integrity": "sha512-fmsZYa9lpn69Ad5eDn7FMcnnSR+8R34W9qJEijxYhTbfOWzr22n1QxCMzXLK+ODyW2973V3Fux959iQoUxzUIA=="
+      "version": "3.3.6",
+      "resolved": "https://registry.npmjs.org/nanoid/-/nanoid-3.3.6.tgz",
+      "integrity": "sha512-BGcqMMJuToF7i1rt+2PWSNVnWIkGCU78jBG3RxO/bZlnZPK2Cmi2QaffxGO/2RvWi9sL+FAiRiXMgsyxQ1DIDA=="
     },
     "next": {
       "version": "12.1.0",
@@ -2266,6 +2300,18 @@
         "postcss": "8.4.5",
         "styled-jsx": "5.0.0",
         "use-subscription": "1.5.1"
+      },
+      "dependencies": {
+        "postcss": {
+          "version": "8.4.5",
+          "resolved": "https://registry.npmjs.org/postcss/-/postcss-8.4.5.tgz",
+          "integrity": "sha512-jBDboWM8qpaqwkMwItqTQTiFikhs/67OYVvblFFTM7MrZjt6yMKd6r2kgXizEbTTljacm4NldIlZnhbjr84QYg==",
+          "requires": {
+            "nanoid": "^3.1.30",
+            "picocolors": "^1.0.0",
+            "source-map-js": "^1.0.1"
+          }
+        }
       }
     },
     "node-releases": {
@@ -2357,13 +2403,14 @@
       "dev": true
     },
     "postcss": {
-      "version": "8.4.5",
-      "resolved": "https://registry.npmjs.org/postcss/-/postcss-8.4.5.tgz",
-      "integrity": "sha512-jBDboWM8qpaqwkMwItqTQTiFikhs/67OYVvblFFTM7MrZjt6yMKd6r2kgXizEbTTljacm4NldIlZnhbjr84QYg==",
+      "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": "^3.1.30",
+        "nanoid": "^3.3.6",
         "picocolors": "^1.0.0",
-        "source-map-js": "^1.0.1"
+        "source-map-js": "^1.0.2"
       }
     },
     "postcss-js": {
@@ -2493,9 +2540,9 @@
       }
     },
     "source-map-js": {
-      "version": "1.0.1",
-      "resolved": "https://registry.npmjs.org/source-map-js/-/source-map-js-1.0.1.tgz",
-      "integrity": "sha512-4+TN2b3tqOCd/kaGRJ/sTYA0tR0mdXx26ipdolxcwtJVqEnqNYvlCAt1q3ypy4QMlYus+Zh34RNtYLoq2oQ4IA=="
+      "version": "1.0.2",
+      "resolved": "https://registry.npmjs.org/source-map-js/-/source-map-js-1.0.2.tgz",
+      "integrity": "sha512-R0XvVJ9WusLiqTCEiGCmICCMplcCkIwwR11mOSD9CR5u+IXYdiseeEuXCVAjS54zqwkLcPNnmU4OeJ6tUrWhDw=="
     },
     "styled-jsx": {
       "version": "5.0.0",
diff --git a/books-app/package.json b/books-app/package.json
index 76428ab3..cef4e9a2 100644
--- a/books-app/package.json
+++ b/books-app/package.json
@@ -13,7 +13,7 @@
   },
   "devDependencies": {
     "autoprefixer": "^10.4.0",
-    "postcss": "^8.4.4",
+    "postcss": "^8.4.31",
     "tailwindcss": "^3.0.0"
   }
 }