diff --git a/requirements.txt b/requirements.txt
index eaa72bdf..857cdb68 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -14,9 +14,7 @@ bcrypt==3.1.4             # via flask-bcrypt, paramiko
 blinker==1.4              # via flask-mail, flask-principal, raven
 boto3==1.6.12
 botocore==1.9.12          # via boto3, s3transfer
-certifi==2018.1.18        # via requests
 cffi==1.11.5              # via bcrypt, cryptography, pynacl
-chardet==3.0.4            # via requests
 click==6.7                # via flask
 cryptography==2.2.1
 docutils==0.14            # via botocore
@@ -30,7 +28,7 @@ flask-sqlalchemy==2.3.2
 flask==0.12
 future==0.16.0
 gunicorn==19.7.1
-idna==2.6                 # via cryptography, requests
+idna==2.6                 # via cryptography
 inflection==0.3.1
 itsdangerous==0.24        # via flask
 jinja2==2.10
@@ -48,24 +46,23 @@ pbr==3.1.1                # via mock
 pem==17.1.0
 psycopg2==2.7.4
 pyasn1-modules==0.2.1     # via python-ldap
-pyasn1==0.4.2             # via paramiko, pyasn1-modules, python-ldap
+pyasn1==0.4.2             # via paramiko, pyasn1-modules, python-ldap, requests
 pycparser==2.18           # via cffi
 pyjwt==1.6.1
 pynacl==1.2.1             # via paramiko
-pyopenssl==17.5.0
+pyopenssl==17.2.0
 pyrfc3339==1.0            # via acme
 python-dateutil==2.6.1    # via alembic, arrow, botocore
 python-editor==1.0.3      # via alembic
 python-ldap==3.0.0
 pytz==2018.3              # via acme, flask-restful, pyrfc3339
 raven[flask]==6.2.1
-requests[security]==2.18.4
+requests[security]==2.11.1
 retrying==1.3.3
 s3transfer==0.1.13        # via boto3
 six==1.11.0
 sqlalchemy-utils==0.33.1
 sqlalchemy==1.2.5         # via alembic, flask-sqlalchemy, marshmallow-sqlalchemy, sqlalchemy-utils
 tabulate==0.8.2
-urllib3==1.22             # via requests
 werkzeug==0.14.1          # via flask
 xmltodict==0.11.0