diff --git a/run_tests.sh b/run_tests.sh
index f7a19cc7..40cb7ffe 100755
--- a/run_tests.sh
+++ b/run_tests.sh
@@ -22,6 +22,10 @@ if [ "$(which apt-get)" ]; then
   apt-get install -y build-essential python2.7 python-dev git-core libssl-dev libffi-dev
 fi
 
+if [ "$(which yum)" ]; then
+  yum install -y '@Development Tools' python-devel git libffi-devel openssl-devel
+fi
+
 # get pip, if necessary
 if [ ! "$(which pip)" ]; then
   curl --silent --show-error --retry 5 \
diff --git a/test-requirements.txt b/test-requirements.txt
index eff30296..9b509570 100644
--- a/test-requirements.txt
+++ b/test-requirements.txt
@@ -9,3 +9,11 @@ sphinx!=1.3b1,<1.3,>=1.2.1 # BSD
 oslosphinx!=3.4.0,>=2.5.0 # Apache-2.0
 doc8 # Apache-2.0
 reno>=1.8.0 # Apache2
+
+# NOTE(mhayden): CentOS 7 has Python 2.7.5, which has no SNI support built in.
+#                Two of the required Python modules for SNI support are here
+#                and the remaining one (ndg-httpsclient) is in the tox.ini
+#                since this module isn't found within the global requirements
+#                list.
+pyasn1  # BSD
+pyOpenSSL>=0.14  # Apache-2.0
diff --git a/tox.ini b/tox.ini
index 9409a649..89d384b7 100644
--- a/tox.ini
+++ b/tox.ini
@@ -105,6 +105,12 @@ deps =
     {[testenv]deps}
     ansible==1.9.4
     ansible-lint>=2.7.0,<3.0.0
+    # NOTE(mhayden): CentOS 7 has Python 2.7.5, which has no SNI support built
+    #                in. Two modules exist in global requirements, and they are
+    #                in test-requirements.txt. This one isn't found in the
+    #                global requirements list, so it needs to be manually added
+    #                here.
+    ndg-httpsclient
 setenv =
     {[testenv]setenv}
     ANSIBLE_HOST_KEY_CHECKING = False