diff --git a/requirements.txt b/requirements.txt
index 3e51fbb..7f66d00 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,4 +1,4 @@
-google-auth==1.27.0
+google-auth==1.28.0
 google-api-python-client==1.12.8
 icalendar==4.0.7
 pytz==2021.1