diff --git a/examples/activate.js b/examples/activate.js
new file mode 100644
index 0000000..6b2d7ce
--- /dev/null
+++ b/examples/activate.js
@@ -0,0 +1,30 @@
+// This can be run after examples/deploy.js you just need the service Sid.
+// Run this example with:
+// node deploy/activate.js SERVICE_SID
+
+const { TwilioServerlessApiClient } = require('../dist');
+const serviceSid = process.argv[2];
+async function run() {
+  const config = {
+    accountSid: process.env.TWILIO_ACCOUNT_SID,
+    authToken: process.env.TWILIO_AUTH_TOKEN,
+  };
+
+  const client = new TwilioServerlessApiClient(config);
+  console.log('Activating');
+  const result = await client.activateBuild({
+    ...config,
+    env: {
+      HELLO: 'hello',
+      WORLD: 'world',
+    },
+    serviceSid,
+    sourceEnvironment: 'test',
+    targetEnvironment: 'stage',
+    createEnvironment: true,
+  });
+  console.log('Done Activating');
+  console.dir(result);
+}
+
+run().catch(console.error);
diff --git a/src/client.ts b/src/client.ts
index 1f73349..b3035c8 100644
--- a/src/client.ts
+++ b/src/client.ts
@@ -318,6 +318,7 @@ export class TwilioServerlessApiClient extends events.EventEmitter {
         targetEnvironment,
         serviceSid,
         sourceEnvironment,
+        env,
       } = activateConfig;
 
       if (!buildSid && !sourceEnvironment) {
@@ -372,6 +373,12 @@ export class TwilioServerlessApiClient extends events.EventEmitter {
         throw new Error('Could not determine build SID');
       }
 
+      this.emit('status-update', {
+        status: DeployStatus.SETTING_VARIABLES,
+        message: 'Setting environment variables',
+      });
+      await setEnvironmentVariables(env, targetEnvironment, serviceSid, this);
+
       const { domain_name } = await getEnvironment(
         targetEnvironment,
         serviceSid,
diff --git a/src/types/activate.ts b/src/types/activate.ts
index 1e3f256..854abf1 100644
--- a/src/types/activate.ts
+++ b/src/types/activate.ts
@@ -2,6 +2,7 @@
 
 import { ClientConfig } from './client';
 import { Sid } from './serverless-api';
+import { EnvironmentVariables } from './generic';
 
 export type ActivateConfig = ClientConfig & {
   force?: boolean;
@@ -10,6 +11,7 @@ export type ActivateConfig = ClientConfig & {
   buildSid?: Sid;
   targetEnvironment: string | Sid;
   sourceEnvironment?: string | Sid;
+  env: EnvironmentVariables;
 };
 
 export type ActivateResult = {