diff --git a/appengine/standard/mailjet/requirements.txt b/appengine/standard/mailjet/requirements.txt
index 4e11eaa96ea..74f23c829b0 100644
--- a/appengine/standard/mailjet/requirements.txt
+++ b/appengine/standard/mailjet/requirements.txt
@@ -1,4 +1,4 @@
 Flask==1.1.2
 requests==2.25.1
 requests-toolbelt==0.9.1
-mailjet-rest==1.3.4
+mailjet-rest==1.4.0