diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index b19a1541..8390173f 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -143,7 +143,8 @@ jobs:
 
       - name: Python 3.3 dependencies
         if: ${{ matrix.python-version == '3.3' }}
-        run: pip install Werkzeug==0.14.1 --force-reinstall
+        run: pip install --force-reinstall \
+          Werkzeug==0.14.1 six>=1.9.0 requests>=0.12.1 enum34 unittest2 blinker webob
 
       - name: Set the framework
         run: echo ${{ matrix.framework }} >> $GITHUB_ENV
diff --git a/setup.py b/setup.py
index 90b0185d..a1ecb7e0 100644
--- a/setup.py
+++ b/setup.py
@@ -23,9 +23,9 @@
     'unittest2'
 ]
 
-version = sys.version_info
-if version[0] == 2 or (version[0] == 3 and version[1] < 4):
-    tests_require.append('mock<=3.0.5') # mock > 3.0.5 requires python >= 3.5
+if sys.version_info < (3, 3):
+    tests_require.append('mock<=3.0.5') # mock > 3.0.5 requires python >= 3.6
+if sys.version_info < (3, 4):
     tests_require.append('enum34')
 
 setup(