diff --git a/packages/api/package.json b/packages/api/package.json
index 164761b..8f0e2f5 100644
--- a/packages/api/package.json
+++ b/packages/api/package.json
@@ -6,6 +6,7 @@
         "start": "yarn workspace @roleypoly/worker-emulator start --basePath `pwd`"
     },
     "devDependencies": {
+        "@cloudflare/workers-types": "^2.1.0",
         "@roleypoly/misc-utils": "*",
         "@roleypoly/types": "*",
         "@roleypoly/worker-emulator": "*",
diff --git a/yarn.lock b/yarn.lock
index d6d242a..cd01476 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1254,6 +1254,11 @@
   resolved "https://registry.yarnpkg.com/@bcoe/v8-coverage/-/v8-coverage-0.2.3.tgz#75a2e8b51cb758a7553d6804a5932d7aace75c39"
   integrity sha512-0hYQ8SB4Db5zvZB4axdMHGwEaQjkZzFjQiN9LVYvIFB2nSUHW9tYpxWriPrWDASIxiaXax83REcLxuSdnGPZtw==
 
+"@cloudflare/workers-types@^2.1.0":
+  version "2.1.0"
+  resolved "https://registry.yarnpkg.com/@cloudflare/workers-types/-/workers-types-2.1.0.tgz#6e4f07567f4c914ad811c2d7a6172d0ae834c7f6"
+  integrity sha512-VmXaHTq0lt6Xre4aK1hUK25hjZjuEUkHtdUEt0FJamv+NzQO54Gwp6Zr5Cfu6SP5EQ/tTmTMP/tK9npA8zhcCg==
+
 "@cnakazawa/watch@^1.0.3":
   version "1.0.4"
   resolved "https://registry.yarnpkg.com/@cnakazawa/watch/-/watch-1.0.4.tgz#f864ae85004d0fcab6f50be9141c4da368d1656a"