diff --git a/requirements.txt b/requirements.txt
index 82f0188..3722999 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -7,7 +7,7 @@ requests>=2.26.0
 requests-oauthlib>=1.3.0
 schedule>=1.1.0
 google-api-python-client==2.108.0
-google-auth-httplib2==0.1.1
+google-auth-httplib2==0.4.0
 google-auth-oauthlib==1.1.0
 
 # Platform-specific libraries (uncomment as needed)