diff --git a/package-lock.json b/package-lock.json
index c30cd99..5399793 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -9,6 +9,7 @@
       "version": "1.0.0",
       "license": "Apache-2.0",
       "dependencies": {
+        "@cfworker/base64url": "^1.12.5",
         "@tsndr/cloudflare-worker-jwt": "^2.5.1",
         "itty-router": "^4.0.27",
         "zod": "^3.22.4"
@@ -36,6 +37,14 @@
         "node": ">=0.10.0"
       }
     },
+    "node_modules/@cfworker/base64url": {
+      "version": "1.12.5",
+      "resolved": "https://registry.npmjs.org/@cfworker/base64url/-/base64url-1.12.5.tgz",
+      "integrity": "sha512-pNLrz0D0MguzFLJisBUv+XOTkpRpRTIMI7/r2QwTWI2MR5VJ7Hysd6ug6DBWksKFy7TK3hCf+qejufdJSN5X+A==",
+      "dependencies": {
+        "rfc4648": "^1.5.2"
+      }
+    },
     "node_modules/@cloudflare/kv-asset-handler": {
       "version": "0.3.1",
       "resolved": "https://registry.npmjs.org/@cloudflare/kv-asset-handler/-/kv-asset-handler-0.3.1.tgz",
@@ -3016,6 +3025,11 @@
         "node": ">=0.10.0"
       }
     },
+    "node_modules/rfc4648": {
+      "version": "1.5.3",
+      "resolved": "https://registry.npmjs.org/rfc4648/-/rfc4648-1.5.3.tgz",
+      "integrity": "sha512-MjOWxM065+WswwnmNONOT+bD1nXzY9Km6u3kzvnx8F8/HXGZdz3T6e6vZJ8Q/RIMUSp/nxqjH3GwvJDy8ijeQQ=="
+    },
     "node_modules/rimraf": {
       "version": "3.0.2",
       "resolved": "https://registry.npmjs.org/rimraf/-/rimraf-3.0.2.tgz",
@@ -4255,6 +4269,14 @@
       "integrity": "sha512-1Yjs2SvM8TflER/OD3cOjhWWOZb58A2t7wpE2S9XfBYTiIl+XFhQG2bjy4Pu1I+EAlCNUzRDYDdFwFYUKvXcIA==",
       "dev": true
     },
+    "@cfworker/base64url": {
+      "version": "1.12.5",
+      "resolved": "https://registry.npmjs.org/@cfworker/base64url/-/base64url-1.12.5.tgz",
+      "integrity": "sha512-pNLrz0D0MguzFLJisBUv+XOTkpRpRTIMI7/r2QwTWI2MR5VJ7Hysd6ug6DBWksKFy7TK3hCf+qejufdJSN5X+A==",
+      "requires": {
+        "rfc4648": "^1.5.2"
+      }
+    },
     "@cloudflare/kv-asset-handler": {
       "version": "0.3.1",
       "resolved": "https://registry.npmjs.org/@cloudflare/kv-asset-handler/-/kv-asset-handler-0.3.1.tgz",
@@ -6325,6 +6347,11 @@
       "integrity": "sha512-U9nH88a3fc/ekCF1l0/UP1IosiuIjyTh7hBvXVMHYgVcfGvt897Xguj2UOLDeI5BG2m7/uwyaLVT6fbtCwTyzw==",
       "dev": true
     },
+    "rfc4648": {
+      "version": "1.5.3",
+      "resolved": "https://registry.npmjs.org/rfc4648/-/rfc4648-1.5.3.tgz",
+      "integrity": "sha512-MjOWxM065+WswwnmNONOT+bD1nXzY9Km6u3kzvnx8F8/HXGZdz3T6e6vZJ8Q/RIMUSp/nxqjH3GwvJDy8ijeQQ=="
+    },
     "rimraf": {
       "version": "3.0.2",
       "resolved": "https://registry.npmjs.org/rimraf/-/rimraf-3.0.2.tgz",
diff --git a/yarn.lock b/yarn.lock
index 03032ce..26bce83 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -7,6 +7,13 @@
   resolved "https://registry.npmjs.org/@aashutoshrathi/word-wrap/-/word-wrap-1.2.6.tgz"
   integrity sha512-1Yjs2SvM8TflER/OD3cOjhWWOZb58A2t7wpE2S9XfBYTiIl+XFhQG2bjy4Pu1I+EAlCNUzRDYDdFwFYUKvXcIA==
 
+"@cfworker/base64url@^1.12.5":
+  version "1.12.5"
+  resolved "https://registry.npmjs.org/@cfworker/base64url/-/base64url-1.12.5.tgz"
+  integrity sha512-pNLrz0D0MguzFLJisBUv+XOTkpRpRTIMI7/r2QwTWI2MR5VJ7Hysd6ug6DBWksKFy7TK3hCf+qejufdJSN5X+A==
+  dependencies:
+    rfc4648 "^1.5.2"
+
 "@cloudflare/kv-asset-handler@0.3.1":
   version "0.3.1"
   resolved "https://registry.npmjs.org/@cloudflare/kv-asset-handler/-/kv-asset-handler-0.3.1.tgz"
@@ -1488,6 +1495,11 @@ reusify@^1.0.4:
   resolved "https://registry.npmjs.org/reusify/-/reusify-1.0.4.tgz"
   integrity sha512-U9nH88a3fc/ekCF1l0/UP1IosiuIjyTh7hBvXVMHYgVcfGvt897Xguj2UOLDeI5BG2m7/uwyaLVT6fbtCwTyzw==
 
+rfc4648@^1.5.2:
+  version "1.5.3"
+  resolved "https://registry.npmjs.org/rfc4648/-/rfc4648-1.5.3.tgz"
+  integrity sha512-MjOWxM065+WswwnmNONOT+bD1nXzY9Km6u3kzvnx8F8/HXGZdz3T6e6vZJ8Q/RIMUSp/nxqjH3GwvJDy8ijeQQ==
+
 rimraf@^3.0.2:
   version "3.0.2"
   resolved "https://registry.npmjs.org/rimraf/-/rimraf-3.0.2.tgz"