diff --git a/lower-constraints.txt b/lower-constraints.txt
index 12a13f272..45296d858 100644
--- a/lower-constraints.txt
+++ b/lower-constraints.txt
@@ -35,7 +35,7 @@ Pygments==2.2.0
 PyJWT==1.5
 PyYAML==5.1
 requests-mock==1.2.0
-requests==2.14.2
+requests==2.18.0
 SQLAlchemy==1.2.5
 stestr==2.0.0
 stevedore==1.20.0
diff --git a/requirements.txt b/requirements.txt
index acf7b4b2d..8244bc96b 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -31,7 +31,7 @@ pbr!=2.1.0,>=2.0.0 # Apache-2.0
 pecan>=1.2.1 # BSD
 PyJWT>=1.5 # MIT
 PyYAML>=5.1 # MIT
-requests>=2.14.2 # Apache-2.0
+requests>=2.18.0 # Apache-2.0
 tenacity>=5.0.1 # Apache-2.0
 SQLAlchemy>=1.2.5 # MIT
 stevedore>=1.20.0 # Apache-2.0