diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index d61ed6d..15b8e4d 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -9,7 +9,7 @@ jobs:
 
     strategy:
       matrix:
-        python-version: [2.7, 3.6, 3.7, 3.8]
+        python-version: [2.7, 3.6, 3.8]
 
     steps:
       - uses: actions/checkout@v2
@@ -35,5 +35,5 @@ jobs:
 
       - name: Run tests on Python ${{ matrix.python-version }}
         env:
-          GITHUB_API_TOKENS: ${{ secrets.GH_TOKEN }}
+          GITHUB_API_TOKENS: ${{ secrets.GH_TOKENS }}
         run: make test
diff --git a/docs/index.rst b/docs/index.rst
index 8cf1bb0..efb1448 100644
--- a/docs/index.rst
+++ b/docs/index.rst
@@ -60,7 +60,7 @@ REST (v3) API
 -------------
 .. autoclass:: GitHubAPI
     :members:
-    :exclude-members:
+    :exclude-members: token_class
 
 GraphQL (v4) API
 ----------------
diff --git a/stscraper/github.py b/stscraper/github.py
index ea70690..a1d207f 100644
--- a/stscraper/github.py
+++ b/stscraper/github.py
@@ -307,7 +307,8 @@ def issue_events(self, repo, issue_no):
     @staticmethod
     def project_exists(repo_slug):
         """Check if the project exists.
-        This is a slightly cheaper alternative to getting repository info.
+        This is a slightly cheaper alternative to getting repository info. It
+        does not using API keys.
         """
         for i in range(5):
             try: