diff --git a/requirements.txt b/requirements.txt
index 0f69731e..f2b0b02f 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -70,6 +70,7 @@ google-cloud-texttospeech==2.16.3
 
 ## MSFT Integration
 msal==1.24.1
+azure-communication-email>=1.0.0  # For sending invitation emails via Azure Communication Services
 
 ## Testing Dependencies
 pytest>=8.0.0