diff --git a/functions/package.json b/functions/package.json
index 995a8534..eaa0c50c 100644
--- a/functions/package.json
+++ b/functions/package.json
@@ -22,7 +22,7 @@
     "dayjs": "1.10.7",
     "firebase-admin": "8.13.0",
     "firebase-functions": "3.16.0",
-    "jsonwebtoken": "8.5.1",
+    "jsonwebtoken": "9.0.0",
     "twitter": "1.7.1"
   },
   "devDependencies": {
diff --git a/functions/yarn.lock b/functions/yarn.lock
index b53be79c..10bf4630 100644
--- a/functions/yarn.lock
+++ b/functions/yarn.lock
@@ -3761,7 +3761,17 @@ jsonschema@^1.0.2:
   resolved "https://registry.yarnpkg.com/jsonschema/-/jsonschema-1.2.7.tgz#4e6d6dc4d83dc80707055ba22c00ec6152c0e6e9"
   integrity sha512-3dFMg9hmI9LdHag/BRIhMefCfbq1hicvYMy8YhZQorAdzOzWz7NjniSpn39yjpzUAMIWtGyyZuH2KNBloH7ZLw==
 
-jsonwebtoken@8.5.1, jsonwebtoken@^8.2.1, jsonwebtoken@^8.5.1:
+jsonwebtoken@9.0.0:
+  version "9.0.0"
+  resolved "https://registry.yarnpkg.com/jsonwebtoken/-/jsonwebtoken-9.0.0.tgz#d0faf9ba1cc3a56255fe49c0961a67e520c1926d"
+  integrity sha512-tuGfYXxkQGDPnLJ7SibiQgVgeDgfbPq2k2ICcbgqW8WxWLBAxKQM/ZCu/IT8SOSwmaYl4dpTFCW5xZv7YbbWUw==
+  dependencies:
+    jws "^3.2.2"
+    lodash "^4.17.21"
+    ms "^2.1.1"
+    semver "^7.3.8"
+
+jsonwebtoken@^8.2.1, jsonwebtoken@^8.5.1:
   version "8.5.1"
   resolved "https://registry.yarnpkg.com/jsonwebtoken/-/jsonwebtoken-8.5.1.tgz#00e71e0b8df54c2121a1f26137df2280673bcc0d"
   integrity sha512-XjwVfRS6jTMsqYs0EsuJ4LGxXV14zQybNd4L2r0UvbVnSF9Af8x7p5MzbJ90Ioz/9TI41/hTCvznF/loiSzn8w==
@@ -5177,6 +5187,13 @@ semver@^7.3.5:
   dependencies:
     lru-cache "^6.0.0"
 
+semver@^7.3.8:
+  version "7.3.8"
+  resolved "https://registry.yarnpkg.com/semver/-/semver-7.3.8.tgz#07a78feafb3f7b32347d725e33de7e2a2df67798"
+  integrity sha512-NB1ctGL5rlHrPJtFDVIVzTyQylMLu9N9VICA6HSFJo8MCGVTMW6gfpicwKmmK/dAjTOrqu5l63JJOpDSrAis3A==
+  dependencies:
+    lru-cache "^6.0.0"
+
 send@0.17.1:
   version "0.17.1"
   resolved "https://registry.yarnpkg.com/send/-/send-0.17.1.tgz#c1d8b059f7900f7466dd4938bdc44e11ddb376c8"