diff --git a/lib/request.js b/lib/request.js
index 289f13fa..c28e92a0 100644
--- a/lib/request.js
+++ b/lib/request.js
@@ -32,6 +32,14 @@ export default class Request {
     if (url.startsWith(`https://${CI_DOMAIN}`)) {
       options.headers = options.headers || {};
       Object.assign(options.headers, this.getJenkinsHeaders());
+    } else if (!url.startsWith('https://')) {
+      url = new URL(url, 'https://api.github.com/').href;
+      options.headers = {
+        Authorization: `Basic ${this.credentials.github}`,
+        'User-Agent': 'node-core-utils',
+        Accept: 'application/vnd.github+json',
+        ...options.headers
+      };
     }
     return wrappedFetch(url, options);
   }
@@ -65,14 +73,9 @@ export default class Request {
   }
 
   async createIssue(title, body, { owner, repo }) {
-    const url = `https://api.github.com/repos/${owner}/${repo}/issues`;
+    const url = `/repos/${owner}/${repo}/issues`;
     const options = {
       method: 'POST',
-      headers: {
-        Authorization: `Basic ${this.credentials.github}`,
-        'User-Agent': 'node-core-utils',
-        Accept: 'application/vnd.github+json'
-      },
       body: JSON.stringify({
         title,
         body
@@ -82,15 +85,9 @@ export default class Request {
   }
 
   async commentIssue(fullUrl, comment) {
-    const commentUrl = fullUrl.replace('https://github.com/', 'https://api.github.com/repos/') +
-      '/comments';
+    const commentUrl = fullUrl.replace('https://github.com/', '/repos/') + '/comments';
     const options = {
       method: 'POST',
-      headers: {
-        Authorization: `Basic ${this.credentials.github}`,
-        'User-Agent': 'node-core-utils',
-        Accept: 'application/vnd.github+json'
-      },
       body: JSON.stringify({
         body: comment,
       })
@@ -99,27 +96,14 @@ export default class Request {
   }
 
   async getPullRequest(fullUrl) {
-    const prUrl = fullUrl.replace('https://github.com/', 'https://api.github.com/repos/').replace('pull', 'pulls');
-    const options = {
-      method: 'GET',
-      headers: {
-        Authorization: `Basic ${this.credentials.github}`,
-        'User-Agent': 'node-core-utils',
-        Accept: 'application/vnd.github+json'
-      }
-    };
-    return this.json(prUrl, options);
+    const prUrl = fullUrl.replace('https://github.com/', '/repos/').replace('pull', 'pulls');
+    return this.json(prUrl);
   }
 
   async createPullRequest(title, body, { owner, repo, head, base }) {
-    const url = `https://api.github.com/repos/${owner}/${repo}/pulls`;
+    const url = `/repos/${owner}/${repo}/pulls`;
     const options = {
       method: 'POST',
-      headers: {
-        Authorization: `Basic ${this.credentials.github}`,
-        'User-Agent': 'node-core-utils',
-        Accept: 'application/vnd.github+json'
-      },
       body: JSON.stringify({
         title,
         body,
@@ -131,13 +115,10 @@ export default class Request {
   }
 
   async closePullRequest(id, { owner, repo }) {
-    const url = `https://api.github.com/repos/${owner}/${repo}/pulls/${id}`;
+    const url = `/repos/${owner}/${repo}/pulls/${id}`;
     const options = {
       method: 'POST',
       headers: {
-        Authorization: `Basic ${this.credentials.github}`,
-        'User-Agent': 'node-core-utils',
-        Accept: 'application/vnd.github+json',
         'Content-Type': 'application/json'
       },
       body: JSON.stringify({
@@ -299,13 +280,11 @@ export default class Request {
       throw new Error('The request has not been ' +
                       'authenticated with a GitHub token');
     }
-    const url = 'https://api.github.com/graphql';
+    const url = '/graphql';
     const options = {
       agent: this.proxyAgent,
       method: 'POST',
       headers: {
-        Authorization: `Basic ${githubCredentials}`,
-        'User-Agent': 'node-core-utils',
         Accept: 'application/vnd.github.antiope-preview+json'
       },
       body: JSON.stringify({
diff --git a/lib/voting_session.js b/lib/voting_session.js
index e3d349fe..bc6d4cae 100644
--- a/lib/voting_session.js
+++ b/lib/voting_session.js
@@ -72,14 +72,10 @@ export default class VotingSession extends Session {
     const subPath = `${prInfo.headRef.name}/vote.yml`;
     this.cli.startSpinner('Downloading vote file from remote...');
     const yamlString = await this.req.text(
-        `https://api.github.com/repos/${this.owner}/${this.repo}/contents/${encodeURIComponent(subPath)}?ref=${prInfo.commits.nodes[0].commit.oid}`, {
-          agent: this.req.proxyAgent,
-          headers: {
-            Authorization: `Basic ${this.req.credentials.github}`,
-            'User-Agent': 'node-core-utils',
-            Accept: 'application/vnd.github.raw'
-          }
-        });
+      `/repos/${this.owner}/${this.repo}/contents/${
+        encodeURIComponent(subPath)}?ref=${prInfo.commits.nodes[0].commit.oid}`,
+      { agent: this.req.proxyAgent }
+    );
     this.cli.stopSpinner('Download complete');
 
     const { shares } = yaml.load(yamlString);
@@ -114,16 +110,15 @@ export default class VotingSession extends Session {
     const body = 'I would like to close this vote, and for this effect, I\'m revealing my ' +
                  `key part:\n\n${'```'}\n${keyPart}\n${'```'}\n`;
     if (this.postComment) {
-      const { message, html_url } = await this.req.json(`https://api.github.com/repos/${this.owner}/${this.repo}/issues/${this.prid}/comments`, {
-        agent: this.req.proxyAgent,
-        method: 'POST',
-        headers: {
-          Authorization: `Basic ${this.req.credentials.github}`,
-          'User-Agent': 'node-core-utils',
-          Accept: 'application/vnd.github.antiope-preview+json'
-        },
-        body: JSON.stringify({ body })
-      });
+      const { message, html_url } = await this.req.json(
+        `/repos/${this.owner}/${this.repo}/issues/${this.prid}/comments`,
+        {
+          agent: this.req.proxyAgent,
+          method: 'POST',
+          headers: { Accept: 'application/vnd.github.antiope-preview+json' },
+          body: JSON.stringify({ body })
+        }
+      );
       if (html_url) {
         this.cli.log(`Comment posted at: ${html_url}`);
         return;