diff --git a/lib/github-client.js b/lib/github-client.js
index 088da22..e968478 100644
--- a/lib/github-client.js
+++ b/lib/github-client.js
@@ -14,6 +14,7 @@ function GitHubClient(config) {
   this.timeout = config.githubTimeout;
   this.baseurl = url.parse(config.githubApiBaseUrl ||
     GitHubClient.API_BASE_URL);
+  this.requestFactory = (this.baseurl.protocol === 'https:') ? https : http;
 }
 
 GitHubClient.API_BASE_URL = 'https://api.github.com/';
@@ -42,14 +43,13 @@ function getHttpOptions(client, repository, paramsStr) {
 }
 
 function makeApiCall(client, metadata, repository) {
-  var requestFactory = (client.baseurl.protocol === 'https:') ? https : http,
-      paramsStr = JSON.stringify({
+  var paramsStr = JSON.stringify({
         title: metadata.title,
         body: metadata.url
       });
   return new Promise(function(resolve, reject) {
     var httpOptions = getHttpOptions(client, repository, paramsStr),
-        req = requestFactory.request(httpOptions, function(res) {
+        req = client.requestFactory.request(httpOptions, function(res) {
           handleResponse(res, resolve, reject);
         });
 
diff --git a/lib/slack-client.js b/lib/slack-client.js
index d69799d..3884d62 100644
--- a/lib/slack-client.js
+++ b/lib/slack-client.js
@@ -14,6 +14,7 @@ function SlackClient(robotSlackClient, config) {
   this.timeout = config.slackTimeout;
   this.successReaction = config.successReaction;
   this.baseurl = url.parse(config.slackApiBaseUrl || SlackClient.API_BASE_URL);
+  this.requestFactory = (this.baseurl.protocol === 'https:') ? https : http;
 }
 
 SlackClient.API_BASE_URL = 'https://slack.com/api/';
@@ -52,15 +53,13 @@ function getHttpOptions(client, method, queryParams) {
 }
 
 function makeApiCall(client, method, params) {
-  var requestFactory = (client.baseurl.protocol === 'https:') ? https : http;
-
   return new Promise(function(resolve, reject) {
     var httpOptions, req;
 
     params.token = process.env.HUBOT_SLACK_TOKEN;
     httpOptions = getHttpOptions(client, method, params);
 
-    req = requestFactory.request(httpOptions, function(res) {
+    req = client.requestFactory.request(httpOptions, function(res) {
       handleResponse(method, res, resolve, reject);
     });
 
diff --git a/test/github-client-test.js b/test/github-client-test.js
index 4237a1b..c246a02 100644
--- a/test/github-client-test.js
+++ b/test/github-client-test.js
@@ -49,11 +49,13 @@ describe('GitHubClient', function() {
     it('should parse the local server URL', function() {
       url.format(githubClient.baseurl).should.eql(
         githubApiServer.address() + '/');
+      githubClient.requestFactory.globalAgent.protocol.should.eql('http:');
     });
 
     it('should parse API_BASE_URL if config base URL undefined', function() {
       var githubClient = new GitHubClient(helpers.baseConfig());
       url.format(githubClient.baseurl).should.eql(GitHubClient.API_BASE_URL);
+      githubClient.requestFactory.globalAgent.protocol.should.eql('https:');
     });
   });
 
diff --git a/test/slack-client-test.js b/test/slack-client-test.js
index 90f6201..43952b7 100644
--- a/test/slack-client-test.js
+++ b/test/slack-client-test.js
@@ -49,11 +49,13 @@ describe('SlackClient', function() {
     it('should parse the local server URL', function() {
       url.format(slackClient.baseurl).should.eql(
         slackApiServer.address() + '/api/');
+      slackClient.requestFactory.globalAgent.protocol.should.eql('http:');
     });
 
     it('should parse API_BASE_URL if config base URL undefined', function() {
       var slackClient = new SlackClient(undefined, helpers.baseConfig());
       url.format(slackClient.baseurl).should.eql(SlackClient.API_BASE_URL);
+      slackClient.requestFactory.globalAgent.protocol.should.eql('https:');
     });
   });