diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
new file mode 100644
index 0000000..8fa9867
--- /dev/null
+++ b/.github/workflows/main.yml
@@ -0,0 +1,31 @@
+name: CI
+on: [push]
+jobs:
+  build:
+    name: Build, lint, and test on Node ${{ matrix.node }}
+
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        node: ['20.x', '22.x']
+
+    steps:
+      - name: Checkout repo
+        uses: actions/checkout@v3
+
+      - name: Use Node ${{ matrix.node }}
+        uses: actions/setup-node@v3
+        with:
+          node-version: ${{ matrix.node }}
+
+      - name: Install deps and build (with cache)
+        uses: bahmutov/npm-install@v1
+
+      - name: Lint
+        run: yarn lint
+
+      - name: Test
+        run: yarn test
+
+      - name: Build
+        run: yarn build
diff --git a/package.json b/package.json
index 267c74c..0aa48bb 100644
--- a/package.json
+++ b/package.json
@@ -24,7 +24,7 @@
   },
   "dependencies": {
     "@trpc/server": "^10.40.0",
-    "uWebSockets.js": "uNetworking/uWebSockets.js#v20.34.0"
+    "uWebSockets.js": "uNetworking/uWebSockets.js#v20.48.0"
   },
   "devDependencies": {
     "@trpc/client": "^10.40.0",
diff --git a/src/applyWsHandler.ts b/src/applyWsHandler.ts
index 40ed447..20c7e3f 100644
--- a/src/applyWsHandler.ts
+++ b/src/applyWsHandler.ts
@@ -100,7 +100,7 @@ type UWSBuiltInOpts = {
   /** Maximum length of received message. If a client tries to send you a message larger than this, the connection is immediately closed. Defaults to 16 * 1024. */
   maxPayloadLength?: number;
   /** Whether or not we should automatically close the socket when a message is dropped due to backpressure. Defaults to false. */
-  closeOnBackpressureLimit?: number;
+  closeOnBackpressureLimit?: boolean;
   /** Maximum number of minutes a WebSocket may be connected before being closed by the server. 0 disables the feature. */
   maxLifetime?: number;
   /** Maximum amount of seconds that may pass without sending or getting a message. Connection is closed if this timeout passes. Resolution (granularity) for timeouts are typically 4 seconds, rounded to closest.
@@ -151,6 +151,12 @@ export function applyWSHandler<TRouter extends AnyRouter>(
     client: WebSocket<Decoration>,
     untransformedJSON: TRPCResponseMessage
   ) {
+    if (!allClients.has(client)) {
+      // if the client is not in the set, it means the client is not connected
+      // and there will be an error thrown by uWebSockets.js
+      // if we try to send a message to it
+      return;
+    }
     client.send(
       JSON.stringify(
         transformTRPCResponse(router._def._config, untransformedJSON)
@@ -179,6 +185,7 @@ export function applyWSHandler<TRouter extends AnyRouter>(
     msg: TRPCClientOutgoingMessage
   ) {
     const data = client.getUserData();
+
     const clientSubscriptions = data.clientSubscriptions;
 
     const { id, jsonrpc } = msg;
diff --git a/yarn.lock b/yarn.lock
index 2c9afd0..d44151c 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -272,14 +272,14 @@
   integrity sha512-+Fj43pSMwJs4KRrH/938Uf+uAELIgVBmQzg/q1YG10djyfA3TnrU8N8XzqCh/okZdszqBQTZf96idMfE5lnwTA==
 
 "@trpc/client@^10.40.0":
-  version "10.45.0"
-  resolved "https://registry.yarnpkg.com/@trpc/client/-/client-10.45.0.tgz#67cf34857cfa7e77bc498cb837c2226a42d24bf4"
-  integrity sha512-m091R1qte9rvkvL8N1e/mzrbb8S4gb+Q4ZNJnEGDgd7kic/6a8DFgSciBTiCoSp0YwOTVhyQzSrrA/sZI6PhBg==
+  version "10.45.2"
+  resolved "https://registry.yarnpkg.com/@trpc/client/-/client-10.45.2.tgz#15f9ba81303bf3417083fc6bb742e4e86b49da90"
+  integrity sha512-ykALM5kYWTLn1zYuUOZ2cPWlVfrXhc18HzBDyRhoPYN0jey4iQHEFSEowfnhg1RvYnrAVjNBgHNeSAXjrDbGwg==
 
 "@trpc/server@^10.40.0":
-  version "10.45.0"
-  resolved "https://registry.yarnpkg.com/@trpc/server/-/server-10.45.0.tgz#be43a1a6e7f41ae86534716933717e80218ccdcb"
-  integrity sha512-2Fwzv6nqpE0Ie/G7PeS0EVR89zLm+c1Mw7T+RAGtU807j4oaUx0zGkBXTu5u9AI+j+BYNN2GZxJcuDTAecbr1A==
+  version "10.45.2"
+  resolved "https://registry.yarnpkg.com/@trpc/server/-/server-10.45.2.tgz#5f2778c4810f93b5dc407146334f8da70a0b51fb"
+  integrity sha512-wOrSThNNE4HUnuhJG6PfDRp4L2009KDVxsd+2VYH8ro6o/7/jwYZ8Uu5j+VaW+mOmc8EHerHzGcdbGNQSAUPgg==
 
 "@tsconfig/node10@^1.0.7":
   version "1.0.9"
@@ -324,24 +324,24 @@
   integrity sha512-RbSSoHliUbnXj3ny0CNFOoxrIDV6SUGyStHsvDqosw6CkdPV8TtWGlfecuK4ToyMEAql6pzNxgCFKanovUzlgQ==
 
 "@types/node-fetch@^2.6.2":
-  version "2.6.10"
-  resolved "https://registry.yarnpkg.com/@types/node-fetch/-/node-fetch-2.6.10.tgz#ff5c1ceacab782f2b7ce69957d38c1c27b0dc469"
-  integrity sha512-PPpPK6F9ALFTn59Ka3BaL+qGuipRfxNE8qVgkp0bVixeiR2c2/L+IVOiBdu9JhhT22sWnQEp6YyHGI2b2+CMcA==
+  version "2.6.11"
+  resolved "https://registry.yarnpkg.com/@types/node-fetch/-/node-fetch-2.6.11.tgz#9b39b78665dae0e82a08f02f4967d62c66f95d24"
+  integrity sha512-24xFj9R5+rfQJLRyM56qh+wnVSYhyXC2tkoBndtY0U+vubqNsYXGjufB2nn8Q6gt0LrARwL6UBtMCSVCwl4B1g==
   dependencies:
     "@types/node" "*"
     form-data "^4.0.0"
 
 "@types/node@*":
-  version "20.10.6"
-  resolved "https://registry.yarnpkg.com/@types/node/-/node-20.10.6.tgz#a3ec84c22965802bf763da55b2394424f22bfbb5"
-  integrity sha512-Vac8H+NlRNNlAmDfGUP7b5h/KA+AtWIzuXy0E6OyP8f1tCLYAtPvKRRDJjAPqhpCb0t6U2j7/xqAuLEebW2kiw==
+  version "22.5.4"
+  resolved "https://registry.yarnpkg.com/@types/node/-/node-22.5.4.tgz#83f7d1f65bc2ed223bdbf57c7884f1d5a4fa84e8"
+  integrity sha512-FDuKUJQm/ju9fT/SeX/6+gBzoPzlVCzfzmGkwKvRHQVxi4BntVbyIwf6a4Xn62mrvndLiml6z/UBXIdEVjQLXg==
   dependencies:
-    undici-types "~5.26.4"
+    undici-types "~6.19.2"
 
 "@types/node@^18.0.6":
-  version "18.19.4"
-  resolved "https://registry.yarnpkg.com/@types/node/-/node-18.19.4.tgz#89672e84f11a2c19543d694dac00ab8d7bc20ddb"
-  integrity sha512-xNzlUhzoHotIsnFoXmJB+yWmBvFZgKCI9TtPIEdYIMM1KWfwuY8zh7wvc1u1OAXlC7dlf6mZVx/s+Y5KfFz19A==
+  version "18.19.50"
+  resolved "https://registry.yarnpkg.com/@types/node/-/node-18.19.50.tgz#8652b34ee7c0e7e2004b3f08192281808d41bf5a"
+  integrity sha512-xonK+NRrMBRtkL1hVCc3G+uXtjh1Al4opBLjqVmipe5ZAaBYWW6cNAiBVZ1BvmkBhep698rP3UM3aRAdSALuhg==
   dependencies:
     undici-types "~5.26.4"
 
@@ -351,9 +351,9 @@
   integrity sha512-7aqorHYgdNO4DM36stTiGO3DvKoex9TQRwsJU6vMaFGyqpBA1MNZkz+PG3gaNUPpTAOYhT1WR7M1JyA3fbS9Cw==
 
 "@types/ws@^8.5.5":
-  version "8.5.10"
-  resolved "https://registry.yarnpkg.com/@types/ws/-/ws-8.5.10.tgz#4acfb517970853fa6574a3a6886791d04a396787"
-  integrity sha512-vmQSUcfalpIq0R9q7uTo2lXs6eGIpt9wtnLdMv9LVpIjCA/+ufZRozlVoVelIYixx1ugCBKDhn89vnsEGOCx9A==
+  version "8.5.12"
+  resolved "https://registry.yarnpkg.com/@types/ws/-/ws-8.5.12.tgz#619475fe98f35ccca2a2f6c137702d85ec247b7e"
+  integrity sha512-3tPRkv1EtkDpzlgyKyI8pGsGZAGPEaXeu0DOj5DI25Ja91bdAYddYHbADRYVrZMRbfW+1l5YwXVDKohDJNQxkQ==
   dependencies:
     "@types/node" "*"
 
@@ -1711,9 +1711,9 @@ typescript@^4.4.4:
   resolved "https://registry.yarnpkg.com/typescript/-/typescript-4.9.5.tgz#095979f9bcc0d09da324d58d03ce8f8374cbe65a"
   integrity sha512-1FXk9E2Hm+QzZQ7z+McJiHL4NW1F2EzMu9Nq9i3zAaGqibafqYwCVU6WyWAuyQRRzOlxou8xZSyXLEN8oKj24g==
 
-uWebSockets.js@uNetworking/uWebSockets.js#v20.34.0:
-  version "20.34.0"
-  resolved "https://codeload.github.com/uNetworking/uWebSockets.js/tar.gz/fca27c05066342b01951782248640c8013b37196"
+uWebSockets.js@uNetworking/uWebSockets.js#v20.48.0:
+  version "20.48.0"
+  resolved "https://codeload.github.com/uNetworking/uWebSockets.js/tar.gz/51ae1d1fd92dff77cbbdc7c431021f85578da1a6"
 
 ufo@^1.3.0:
   version "1.3.1"
@@ -1725,6 +1725,11 @@ undici-types@~5.26.4:
   resolved "https://registry.yarnpkg.com/undici-types/-/undici-types-5.26.5.tgz#bcd539893d00b56e964fd2657a4866b221a65617"
   integrity sha512-JlCMO+ehdEIKqlFxk6IfVoAUVmgz7cU7zD/h9XZ0qzeosSHmUJVOzSQvvYSYWXkFXC+IfLKSIffhv0sVZup6pA==
 
+undici-types@~6.19.2:
+  version "6.19.8"
+  resolved "https://registry.yarnpkg.com/undici-types/-/undici-types-6.19.8.tgz#35111c9d1437ab83a7cdc0abae2f26d88eda0a02"
+  integrity sha512-ve2KP6f/JnbPBFyobGHuerC9g1FYGn/F8n1LWTwNxCEzd6IfqTwUQcNXgEtmmQ6DlRrC1hrSrBnCZPokRrDHjw==
+
 uri-js@^4.2.2:
   version "4.4.1"
   resolved "https://registry.yarnpkg.com/uri-js/-/uri-js-4.4.1.tgz#9b1a52595225859e55f669d928f88c6c57f2a77e"
@@ -1833,9 +1838,9 @@ wrappy@1:
   integrity sha512-l4Sp/DRseor9wL6EvV2+TuQn63dMkPjZ/sp9XkghTEbV9KlPS1xUsZ3u7/IQO4wxtcFB4bgpQPRcR3QCvezPcQ==
 
 ws@^8.14.1:
-  version "8.16.0"
-  resolved "https://registry.yarnpkg.com/ws/-/ws-8.16.0.tgz#d1cd774f36fbc07165066a60e40323eab6446fd4"
-  integrity sha512-HS0c//TP7Ina87TfiPUz1rQzMhHrl/SG2guqRcTOIUYD2q8uhUdNHZYJUaQ8aTGPzCh+c6oawMKW35nFl1dxyQ==
+  version "8.18.0"
+  resolved "https://registry.yarnpkg.com/ws/-/ws-8.18.0.tgz#0d7505a6eafe2b0e712d232b42279f53bc289bbc"
+  integrity sha512-8VbfWfHLbbwu3+N6OKsOMpBdT4kXPDDB9cJk2bJ6mh9ucxdlnNvH1e+roYkKmN9Nxw2yjz7VzeO9oOz2zJ04Pw==
 
 yallist@^4.0.0:
   version "4.0.0"
@@ -1858,6 +1863,6 @@ yocto-queue@^1.0.0:
   integrity sha512-9bnSc/HEW2uRy67wc+T8UwauLuPJVn28jb+GtJY16iiKWyvmYJRXVT4UamsAEGQfPohgr2q4Tq0sQbQlxTfi1g==
 
 zod@^3.22.4:
-  version "3.22.4"
-  resolved "https://registry.yarnpkg.com/zod/-/zod-3.22.4.tgz#f31c3a9386f61b1f228af56faa9255e845cf3fff"
-  integrity sha512-iC+8Io04lddc+mVqQ9AZ7OQ2MrUKGN+oIQyq1vemgt46jwCwLfhq7/pwnBnNXXXZb8VTVLKwp9EDkx+ryxIWmg==
+  version "3.23.8"
+  resolved "https://registry.yarnpkg.com/zod/-/zod-3.23.8.tgz#e37b957b5d52079769fb8097099b592f0ef4067d"
+  integrity sha512-XBx9AXhXktjUqnepgTiE5flcKIYWi/rme0Eaj+5Y0lftuGBq+jyRu/md4WnuxqgP1ubdpNCsYEYPxrzVHD8d6g==