diff --git a/src/aare/daq/tellupdater.py b/src/aare/daq/tellupdater.py
index 13bf63af..f4e796ca 100644
--- a/src/aare/daq/tellupdater.py
+++ b/src/aare/daq/tellupdater.py
@@ -50,7 +50,7 @@ def listen_to_sse():
                 "/etc/ssl/certs/secrets/mx-x10sa-queue-01.key"
             )
             # The DigiCert root you have on the machine
-            ca_root = "/etc/ssl/certs/secrets/mx-db-01_DigiCert_Global_Root_G2.pem"
+            ca_root = "/etc/ssl/certs/secrets/mx-db-01_Full_Chain_CA.pem"
 
             # Open the stream using the certificates required by Nginx
             response = requests.get(sse_url, stream=True, cert=cert_pair, verify=ca_root)
@@ -183,7 +183,7 @@ def main():
             ssl_settings = {
                 "certfile": "/etc/ssl/certs/secrets/mx-x10sa-queue-01.crt",
                 "keyfile": "/etc/ssl/certs/secrets/mx-x10sa-queue-01.key",
-                "ca_certs": "/etc/ssl/certs/secrets/mx-db-01_DigiCert_Global_Root_G2.pem",
+                "ca_certs": "/etc/ssl/certs/secrets/mx-db-01_Full_Chain_CA.pem",
                 "cert_reqs": ssl.CERT_REQUIRED
             }