diff --git a/.yarn/cache/@esbuild-linux-x64-npm-0.16.17-05d9fa63ae-8.zip b/.yarn/cache/@esbuild-linux-x64-npm-0.16.17-05d9fa63ae-8.zip
new file mode 100644
index 0000000..adba3fc
Binary files /dev/null and b/.yarn/cache/@esbuild-linux-x64-npm-0.16.17-05d9fa63ae-8.zip differ
diff --git a/.yarn/cache/@swc-core-linux-x64-gnu-npm-1.3.100-d30180f514-8.zip b/.yarn/cache/@swc-core-linux-x64-gnu-npm-1.3.100-d30180f514-8.zip
new file mode 100644
index 0000000..6221ceb
Binary files /dev/null and b/.yarn/cache/@swc-core-linux-x64-gnu-npm-1.3.100-d30180f514-8.zip differ
diff --git a/.yarn/cache/cookie-npm-0.6.0-362d6a2e45-f56a7d32a0.zip b/.yarn/cache/cookie-npm-0.6.0-362d6a2e45-f56a7d32a0.zip
new file mode 100644
index 0000000..8bec728
Binary files /dev/null and b/.yarn/cache/cookie-npm-0.6.0-362d6a2e45-f56a7d32a0.zip differ
diff --git a/.yarn/cache/express-npm-4.19.2-f81334a22a-212dbd6c2c.zip b/.yarn/cache/express-npm-4.19.2-f81334a22a-212dbd6c2c.zip
new file mode 100644
index 0000000..0d22180
Binary files /dev/null and b/.yarn/cache/express-npm-4.19.2-f81334a22a-212dbd6c2c.zip differ
diff --git a/calendar-web/package.json b/calendar-web/package.json
index e92c2d8..43f0ef2 100644
--- a/calendar-web/package.json
+++ b/calendar-web/package.json
@@ -170,7 +170,7 @@
     "dotenv-cli": "^5.1.0",
     "esbuild": "^0.17.5",
     "eslint-config-skiff-eslint": "workspace:*",
-    "express": "^4.18.1",
+    "express": "^4.19.2",
     "fake-indexeddb": "^4.0.0",
     "favicons": "^7.1.0",
     "favicons-webpack-plugin": "^6.0.0",
diff --git a/package.json b/package.json
index 6b564de..8830e33 100644
--- a/package.json
+++ b/package.json
@@ -214,7 +214,7 @@
     "ethers": "^5.7.0",
     "eventemitter3": "^4.0.7",
     "events": "^3.3.0",
-    "express": "^4.17.2",
+    "express": "^4.19.2",
     "fflate": "^0.7.3",
     "file-loader": "^6.2.0",
     "file-saver": "^2.0.5",
diff --git a/yarn.lock b/yarn.lock
index 56be1cf..dbbb5ff 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -15138,7 +15138,7 @@ __metadata:
   languageName: node
   linkType: hard
 
-"body-parser@npm:^1.20.0":
+"body-parser@npm:1.20.2, body-parser@npm:^1.20.0":
   version: 1.20.2
   resolution: "body-parser@npm:1.20.2"
   dependencies:
@@ -15699,7 +15699,7 @@ __metadata:
     esbuild: ^0.17.5
     eslint-config-skiff-eslint: "workspace:*"
     eventemitter3: ^4.0.7
-    express: ^4.18.1
+    express: ^4.19.2
     fake-indexeddb: ^4.0.0
     favicons: ^7.1.0
     favicons-webpack-plugin: ^6.0.0
@@ -16709,6 +16709,13 @@ __metadata:
   languageName: node
   linkType: hard
 
+"cookie@npm:0.6.0":
+  version: 0.6.0
+  resolution: "cookie@npm:0.6.0"
+  checksum: f56a7d32a07db5458e79c726b77e3c2eff655c36792f2b6c58d351fb5f61531e5b1ab7f46987150136e366c65213cbe31729e02a3eaed630c3bf7334635fb410
+  languageName: node
+  linkType: hard
+
 "cookie@npm:^0.4.1, cookie@npm:^0.4.2":
   version: 0.4.2
   resolution: "cookie@npm:0.4.2"
@@ -20261,7 +20268,7 @@ __metadata:
   languageName: node
   linkType: hard
 
-"express@npm:^4.17.2, express@npm:^4.17.3, express@npm:^4.18.1":
+"express@npm:^4.17.3":
   version: 4.18.2
   resolution: "express@npm:4.18.2"
   dependencies:
@@ -20300,6 +20307,45 @@ __metadata:
   languageName: node
   linkType: hard
 
+"express@npm:^4.19.2":
+  version: 4.19.2
+  resolution: "express@npm:4.19.2"
+  dependencies:
+    accepts: ~1.3.8
+    array-flatten: 1.1.1
+    body-parser: 1.20.2
+    content-disposition: 0.5.4
+    content-type: ~1.0.4
+    cookie: 0.6.0
+    cookie-signature: 1.0.6
+    debug: 2.6.9
+    depd: 2.0.0
+    encodeurl: ~1.0.2
+    escape-html: ~1.0.3
+    etag: ~1.8.1
+    finalhandler: 1.2.0
+    fresh: 0.5.2
+    http-errors: 2.0.0
+    merge-descriptors: 1.0.1
+    methods: ~1.1.2
+    on-finished: 2.4.1
+    parseurl: ~1.3.3
+    path-to-regexp: 0.1.7
+    proxy-addr: ~2.0.7
+    qs: 6.11.0
+    range-parser: ~1.2.1
+    safe-buffer: 5.2.1
+    send: 0.18.0
+    serve-static: 1.15.0
+    setprototypeof: 1.2.0
+    statuses: 2.0.1
+    type-is: ~1.6.18
+    utils-merge: 1.0.1
+    vary: ~1.1.2
+  checksum: 212dbd6c2c222a96a61bc927639c95970a53b06257080bb9e2838adb3bffdb966856551fdad1ab5dd654a217c35db94f987d0aa88d48fb04d306340f5f34dca5
+  languageName: node
+  linkType: hard
+
 "ext@npm:^1.1.2":
   version: 1.7.0
   resolution: "ext@npm:1.7.0"
@@ -30571,7 +30617,7 @@ __metadata:
     ethers: ^5.7.0
     eventemitter3: ^4.0.7
     events: ^3.3.0
-    express: ^4.17.2
+    express: ^4.19.2
     fflate: ^0.7.3
     file-loader: ^6.2.0
     file-saver: ^2.0.5