try

.travis.yml

@@ -29,7 +29,6 @@ matrix:
     osx_image: xcode9
     python: 3.5
     env:
-    - NEED_SSL_FIX=true
     - TRAVIS_PYTHON_VERSION=3.5
   - os: osx
     language: generic

.travis/install.sh

@@ -65,8 +65,13 @@ if [[ $TRAVIS_OS_NAME == "osx" ]]; then
 		builtin popd
 	fi
 
+	if [[ "${TRAVIS_PYTHON_VERSION}" == "3.5" ]]; then
+		${python} -m pip install --user "requests[security]"
+	fi
+
 	# https://bugs.python.org/issue28150
 	if [[ "${NEED_SSL_FIX}" == "true" ]]; then
+		cat "/Applications/Python ${TRAVIS_PYTHON_VERSION}/Install Certificates.command"
 		"/Applications/Python ${TRAVIS_PYTHON_VERSION}/Install Certificates.command"
 	fi