diff --git a/.github/workflows/authzed-node.yaml b/.github/workflows/authzed-node.yaml
index 56f6ffb..c615031 100644
--- a/.github/workflows/authzed-node.yaml
+++ b/.github/workflows/authzed-node.yaml
@@ -18,12 +18,17 @@ jobs:
   test:
     name: Lint and Test
     runs-on: ubuntu-latest
-    
+    strategy:
+      matrix:
+        node-version: [14, 16, 17]
     steps:
     - uses: actions/checkout@v2
     - uses: "authzed/action-spicedb@v1"
       with:
         version: "latest"
+    - uses: actions/setup-node@v1
+      with:
+        node-version: ${{ matrix.node-version }}
     - uses: bahmutov/npm-install@v1
       with:
         working-directory: ./
@@ -43,7 +48,7 @@ jobs:
       - uses: actions/checkout@v1
       - uses: actions/setup-node@v1
         with:
-          node-version: 10
+          node-version: 14
       - run: npm install
       - run: npm test
       - uses: battila7/get-version-action@v2
diff --git a/README.md b/README.md
index c3b039e..79bdb75 100644
--- a/README.md
+++ b/README.md
@@ -99,3 +99,10 @@ client.checkPermission(checkPermissionRequest, (err, response) => {
     console.log(err);
 });
 ```
+
+## Requirements
+
+Supported Node.js versions: 14, 16, 17
+
+Minimum TypeScript version 3.8
+
diff --git a/package.json b/package.json
index 115545b..98d7f35 100644
--- a/package.json
+++ b/package.json
@@ -32,6 +32,6 @@
     "grpc-tools": "^1.10.0",
     "jasmine": "^3.6.4",
     "ts-node": "^10.3.0",
-    "typescript": "^4.4.4"
+    "typescript": "^3.8"
   }
 }
diff --git a/src/full.test.ts b/src/full.test.ts
index e6cd79c..d5c3d73 100644
--- a/src/full.test.ts
+++ b/src/full.test.ts
@@ -1,6 +1,4 @@
-import { Client } from "@grpc/grpc-js";
 import { ClientSecurity } from "./util";
-import * as v0 from "./v0";
 import * as v1 from "./v1";
 import { Consistency } from "./v1";
 import * as v1alpha from "./v1alpha1";
diff --git a/src/v1.test.ts b/src/v1.test.ts
index 1c4e8fe..5acfe94 100644
--- a/src/v1.test.ts
+++ b/src/v1.test.ts
@@ -61,6 +61,7 @@ describe("a check with an known namespace", () => {
 
     client.writeSchema(request, function (err, response) {
       expect(err).toBe(null);
+      expect(response).toBeTruthy();
 
       // Write a relationship.
       const resource = ObjectReference.create({
@@ -88,6 +89,7 @@ describe("a check with an known namespace", () => {
 
       client.writeRelationships(writeRequest, function (err, response) {
         expect(err).toBe(null);
+        expect(response).toBeTruthy();
 
         // Call check.
         const checkPermissionRequest = CheckPermissionRequest.create({
diff --git a/yarn.lock b/yarn.lock
index 7a4686b..dea7255 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1789,16 +1789,11 @@ type-fest@^0.20.2:
   resolved "https://registry.yarnpkg.com/type-fest/-/type-fest-0.20.2.tgz#1bf207f4b28f91583666cb5fbd327887301cd5f4"
   integrity sha512-Ne+eE4r0/iWnpAxD852z3A+N0Bt5RN//NjJwRd2VFHEmrywxf5vsZlh4R6lixl6B+wz/8d+maTSAkN1FIkI3LQ==
 
-typescript@^3.9:
+typescript@^3.8, typescript@^3.9:
   version "3.9.10"
   resolved "https://registry.yarnpkg.com/typescript/-/typescript-3.9.10.tgz#70f3910ac7a51ed6bef79da7800690b19bf778b8"
   integrity sha512-w6fIxVE/H1PkLKcCPsFqKE7Kv7QUwhU8qQY2MueZXWx5cPZdwFupLgKK3vntcK98BtNHZtAF4LA/yl2a7k8R6Q==
 
-typescript@^4.4.4:
-  version "4.4.4"
-  resolved "https://registry.yarnpkg.com/typescript/-/typescript-4.4.4.tgz#2cd01a1a1f160704d3101fd5a58ff0f9fcb8030c"
-  integrity sha512-DqGhF5IKoBl8WNf8C1gu8q0xZSInh9j1kJJMqT3a94w1JzVaBU4EXOSMrz9yDqMT0xt3selp83fuFMQ0uzv6qA==
-
 uri-js@^4.2.2:
   version "4.4.1"
   resolved "https://registry.yarnpkg.com/uri-js/-/uri-js-4.4.1.tgz#9b1a52595225859e55f669d928f88c6c57f2a77e"