diff --git a/services/email_service/requirements.txt b/services/email_service/requirements.txt
index 5b480ef60..82cac0b76 100644
--- a/services/email_service/requirements.txt
+++ b/services/email_service/requirements.txt
@@ -42,7 +42,7 @@ pytest-cov==4.1.0
 responses==0.24.1
 
 # Code Quality
-black==24.3.0
+black==26.3.1
 isort==5.13.2
 flake8==6.1.0
 mypy==1.7.1