diff --git a/requirements.txt b/requirements.txt
index 53bd8db..3e58b9f 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -2,7 +2,7 @@ alembic==1.4.0
 certifi==2019.11.28
 Click==7.0
 Flask==1.1.1
-Flask-Cors==3.0.8
+Flask-Cors==3.0.9
 Flask-Login==0.5.0
 Flask-Migrate==2.5.2
 flask-redis==0.4.0
diff --git a/rtd-requirements.txt b/rtd-requirements.txt
index 4c9b009..118e730 100644
--- a/rtd-requirements.txt
+++ b/rtd-requirements.txt
@@ -6,7 +6,7 @@ alembic==1.4.0
 certifi==2019.11.28
 Click==7.0
 Flask==1.1.1
-Flask-Cors==3.0.8
+Flask-Cors==3.0.9
 Flask-Login==0.5.0
 Flask-Migrate==2.5.2
 flask-redis==0.4.0