diff --git a/build.gradle b/build.gradle
index 9bfae2d..54d84e2 100644
--- a/build.gradle
+++ b/build.gradle
@@ -144,7 +144,7 @@ dependencies {
     api 'com.kohlschutter.junixsocket:junixsocket-core:2.9.1'
 
     // Twilio SDK for SMS
-    api 'com.twilio.sdk:twilio:10.1.5'
+    api 'com.twilio.sdk:twilio:10.6.4'
 
     // SendGrid SDK to send emails from GCE
     api 'com.sendgrid:sendgrid-java:4.10.2'