diff --git a/changelog/5808.bugfix.rst b/changelog/5808.bugfix.rst
new file mode 100644
index 000000000000..a76375047a7e
--- /dev/null
+++ b/changelog/5808.bugfix.rst
@@ -0,0 +1 @@
+Changed to variable CERT_URI in hangouts.py to a string type
diff --git a/rasa/core/channels/hangouts.py b/rasa/core/channels/hangouts.py
index 254d27b4984c..0947291da093 100644
--- a/rasa/core/channels/hangouts.py
+++ b/rasa/core/channels/hangouts.py
@@ -14,9 +14,7 @@
 logger = logging.getLogger(__name__)
 
 CHANNEL_NAME = "hangouts"
-CERT_URI = (
-    "https://www.googleapis.com/service_accounts/v1/metadata/x509/chat@system.gserviceaccount.com",
-)
+CERT_URI = "https://www.googleapis.com/service_accounts/v1/metadata/x509/chat@system.gserviceaccount.com"
 
 
 class HangoutsOutput(OutputChannel):