diff --git a/package-lock.json b/package-lock.json
index d0d04cd..f4cece6 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -24,7 +24,7 @@
         "next-mdx-remote": "4.2.0",
         "nodemailer": "6.8.0",
         "react": "18.2.0",
-        "react-calendar": "3.9.0",
+        "react-calendar": "4.0.0",
         "react-dom": "18.2.0",
         "uuid": "9.0.0"
       },
@@ -4216,6 +4216,14 @@
         "wrap-ansi": "^7.0.0"
       }
     },
+    "node_modules/clsx": {
+      "version": "1.2.1",
+      "resolved": "https://registry.npmjs.org/clsx/-/clsx-1.2.1.tgz",
+      "integrity": "sha512-EcR6r5a8bj6pu3ycsa/E/cKVGuTgZJZdsyUYHOksG/UHIiKfjxzRxYJpyVBwYaQeOvghal9fcc4PidlgzugAQg==",
+      "engines": {
+        "node": ">=6"
+      }
+    },
     "node_modules/co": {
       "version": "4.6.0",
       "resolved": "https://registry.npmjs.org/co/-/co-4.6.0.tgz",
@@ -7846,14 +7854,6 @@
       "integrity": "sha512-ZS4Bp4r/Zoeq6+NLJpP+0Zzm0pR8whtGPf1XExKLJBAczGMnSi3It14OiNCStjQjM6NU1okjQGSxgEZN8eBYKg==",
       "optional": true
     },
-    "node_modules/merge-class-names": {
-      "version": "1.4.2",
-      "resolved": "https://registry.npmjs.org/merge-class-names/-/merge-class-names-1.4.2.tgz",
-      "integrity": "sha512-bOl98VzwCGi25Gcn3xKxnR5p/WrhWFQB59MS/aGENcmUc6iSm96yrFDF0XSNurX9qN4LbJm0R9kfvsQ17i8zCw==",
-      "funding": {
-        "url": "https://github.com/wojtekmaj/merge-class-names?sponsor=1"
-      }
-    },
     "node_modules/merge-stream": {
       "version": "2.0.0",
       "resolved": "https://registry.npmjs.org/merge-stream/-/merge-stream-2.0.0.tgz",
@@ -10066,21 +10066,21 @@
       }
     },
     "node_modules/react-calendar": {
-      "version": "3.9.0",
-      "resolved": "https://registry.npmjs.org/react-calendar/-/react-calendar-3.9.0.tgz",
-      "integrity": "sha512-g6RJCEaPovHTiV2bMhBUfm0a1YoMj4bOUpL8hQSLmR1Glhc7lgRLtZBd4mcC4jkoGsb+hv9uA/QH4pZcm5l9lQ==",
+      "version": "4.0.0",
+      "resolved": "https://registry.npmjs.org/react-calendar/-/react-calendar-4.0.0.tgz",
+      "integrity": "sha512-y9Q5Oo3Mq869KExbOCP3aJ3hEnRZKZ0TqUa9QU1wJGgDZFrW1qTaWp5v52oZpmxTTrpAMTUcUGaC0QJcO1f8Nw==",
       "dependencies": {
         "@wojtekmaj/date-utils": "^1.0.2",
+        "clsx": "^1.2.1",
         "get-user-locale": "^1.2.0",
-        "merge-class-names": "^1.1.1",
         "prop-types": "^15.6.0"
       },
       "funding": {
         "url": "https://github.com/wojtekmaj/react-calendar?sponsor=1"
       },
       "peerDependencies": {
-        "react": "^16.3.0 || ^17.0.0 || ^18.0.0",
-        "react-dom": "^16.3.0 || ^17.0.0 || ^18.0.0"
+        "react": "^16.8.0 || ^17.0.0 || ^18.0.0",
+        "react-dom": "^16.8.0 || ^17.0.0 || ^18.0.0"
       }
     },
     "node_modules/react-dom": {
@@ -14798,6 +14798,11 @@
         "wrap-ansi": "^7.0.0"
       }
     },
+    "clsx": {
+      "version": "1.2.1",
+      "resolved": "https://registry.npmjs.org/clsx/-/clsx-1.2.1.tgz",
+      "integrity": "sha512-EcR6r5a8bj6pu3ycsa/E/cKVGuTgZJZdsyUYHOksG/UHIiKfjxzRxYJpyVBwYaQeOvghal9fcc4PidlgzugAQg=="
+    },
     "co": {
       "version": "4.6.0",
       "resolved": "https://registry.npmjs.org/co/-/co-4.6.0.tgz",
@@ -17470,11 +17475,6 @@
       "integrity": "sha512-ZS4Bp4r/Zoeq6+NLJpP+0Zzm0pR8whtGPf1XExKLJBAczGMnSi3It14OiNCStjQjM6NU1okjQGSxgEZN8eBYKg==",
       "optional": true
     },
-    "merge-class-names": {
-      "version": "1.4.2",
-      "resolved": "https://registry.npmjs.org/merge-class-names/-/merge-class-names-1.4.2.tgz",
-      "integrity": "sha512-bOl98VzwCGi25Gcn3xKxnR5p/WrhWFQB59MS/aGENcmUc6iSm96yrFDF0XSNurX9qN4LbJm0R9kfvsQ17i8zCw=="
-    },
     "merge-stream": {
       "version": "2.0.0",
       "resolved": "https://registry.npmjs.org/merge-stream/-/merge-stream-2.0.0.tgz",
@@ -18830,13 +18830,13 @@
       }
     },
     "react-calendar": {
-      "version": "3.9.0",
-      "resolved": "https://registry.npmjs.org/react-calendar/-/react-calendar-3.9.0.tgz",
-      "integrity": "sha512-g6RJCEaPovHTiV2bMhBUfm0a1YoMj4bOUpL8hQSLmR1Glhc7lgRLtZBd4mcC4jkoGsb+hv9uA/QH4pZcm5l9lQ==",
+      "version": "4.0.0",
+      "resolved": "https://registry.npmjs.org/react-calendar/-/react-calendar-4.0.0.tgz",
+      "integrity": "sha512-y9Q5Oo3Mq869KExbOCP3aJ3hEnRZKZ0TqUa9QU1wJGgDZFrW1qTaWp5v52oZpmxTTrpAMTUcUGaC0QJcO1f8Nw==",
       "requires": {
         "@wojtekmaj/date-utils": "^1.0.2",
+        "clsx": "^1.2.1",
         "get-user-locale": "^1.2.0",
-        "merge-class-names": "^1.1.1",
         "prop-types": "^15.6.0"
       }
     },
diff --git a/package.json b/package.json
index 88b6fce..035bb76 100644
--- a/package.json
+++ b/package.json
@@ -27,7 +27,7 @@
     "next-mdx-remote": "4.2.0",
     "nodemailer": "6.8.0",
     "react": "18.2.0",
-    "react-calendar": "3.9.0",
+    "react-calendar": "4.0.0",
     "react-dom": "18.2.0",
     "uuid": "9.0.0"
   },