diff --git a/requirements.txt b/requirements.txt
index da2a958..5d0ac9d 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -5,4 +5,5 @@ humanize>=3.1.0,<3.2
 ics>=0.7,<0.8
 caldav>=0.7.1,<0.8
 lockfile>=0.12.2,<0.13
-requests-oauthlib
\ No newline at end of file
+google-auth-oauthlib>=0.4.2,<0.5
+requests-oauthlib>=1.3.0,<1.4
\ No newline at end of file