diff --git a/package-lock.json b/package-lock.json
index dd19b62..795dc61 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -8562,14 +8562,14 @@
       "dev": true
     },
     "postcss": {
-      "version": "8.2.15",
-      "resolved": "https://registry.npmjs.org/postcss/-/postcss-8.2.15.tgz",
-      "integrity": "sha512-2zO3b26eJD/8rb106Qu2o7Qgg52ND5HPjcyQiK2B98O388h43A448LCslC0dI2P97wCAQRJsFvwTRcXxTKds+Q==",
+      "version": "8.3.0",
+      "resolved": "https://registry.npmjs.org/postcss/-/postcss-8.3.0.tgz",
+      "integrity": "sha512-+ogXpdAjWGa+fdYY5BQ96V/6tAo+TdSSIMP5huJBIygdWwKtVoB5JWZ7yUd4xZ8r+8Kvvx4nyg/PQ071H4UtcQ==",
       "dev": true,
       "requires": {
         "colorette": "^1.2.2",
         "nanoid": "^3.1.23",
-        "source-map": "^0.6.1"
+        "source-map-js": "^0.6.2"
       },
       "dependencies": {
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@@ -8577,12 +8577,6 @@
           "resolved": "https://registry.npmjs.org/colorette/-/colorette-1.2.2.tgz",
           "integrity": "sha512-MKGMzyfeuutC/ZJ1cba9NqcNpfeqMUcYmyF1ZFY6/Cn7CNSAKx6a+s48sqLqyAiZuaP2TcqMhoo+dlwFnVxT9w==",
           "dev": true
-        },
-        "nanoid": {
-          "version": "3.1.23",
-          "resolved": "https://registry.npmjs.org/nanoid/-/nanoid-3.1.23.tgz",
-          "integrity": "sha512-FiB0kzdP0FFVGDKlRLEQ1BgDzU87dy5NnzjeW9YZNt+/c3+q82EQDUwniSAUxp/F0gFNI1ZhKU1FqYsMuqZVnw==",
-          "dev": true
         }
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@@ -10630,6 +10624,12 @@
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     },
+    "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==",
+      "dev": true
+    },
     "source-map-resolve": {
       "version": "0.5.3",
       "resolved": "https://registry.npmjs.org/source-map-resolve/-/source-map-resolve-0.5.3.tgz",
diff --git a/package.json b/package.json
index 2538e68..aff48ef 100644
--- a/package.json
+++ b/package.json
@@ -31,7 +31,7 @@
     "@types/react-calendar": "^3.1.6",
     "@types/uuid": "^8.3.0",
     "jest": "^26.6.3",
-    "postcss": "^8.2.15",
+    "postcss": "^8.3.0",
     "postcss-flexbugs-fixes": "^5.0.2",
     "postcss-preset-env": "^6.7.0",
     "swr": "^0.5.6",