diff --git a/tests/test_asgi.py b/tests/test_asgi.py
index 2a30eaf9..b2d9a70f 100644
--- a/tests/test_asgi.py
+++ b/tests/test_asgi.py
@@ -2,7 +2,6 @@
 
 import sys
 from unittest import TestCase
-from parameterized import parameterized
 
 from prometheus_client import CollectorRegistry, Counter, generate_latest
 from prometheus_client.exposition import CONTENT_TYPE_LATEST
@@ -81,13 +80,7 @@ def get_all_output(self):
                 break
         return outputs
 
-    @parameterized.expand([
-        ["counter", "A counter", 2],
-        ["counter", "Another counter", 3],
-        ["requests", "Number of requests", 5],
-        ["failed_requests", "Number of failed requests", 7],
-    ])
-    def test_reports_metrics(self, metric_name, help_text, increments):
+    def validate_metrics(self, metric_name, help_text, increments):
         """
         ASGI app serves the metrics from the provided registry.
         """
@@ -116,3 +109,15 @@ def test_reports_metrics(self, metric_name, help_text, increments):
         self.assertIn("# HELP " + metric_name + "_total " + help_text + "\n", output)
         self.assertIn("# TYPE " + metric_name + "_total counter\n", output)
         self.assertIn(metric_name + "_total " + str(increments) + ".0\n", output)
+
+    def test_report_metrics_1(self):
+        self.validate_metrics("counter", "A counter", 2)
+
+    def test_report_metrics_2(self):
+        self.validate_metrics("counter", "Another counter", 3)
+
+    def test_report_metrics_3(self):
+        self.validate_metrics("requests", "Number of requests", 5)
+
+    def test_report_metrics_4(self):
+        self.validate_metrics("failed_requests", "Number of failed requests", 7)
diff --git a/tests/test_wsgi.py b/tests/test_wsgi.py
index 73585ef9..af251ac4 100644
--- a/tests/test_wsgi.py
+++ b/tests/test_wsgi.py
@@ -2,7 +2,6 @@
 
 import sys
 from unittest import TestCase
-from parameterized import parameterized
 from wsgiref.util import setup_testing_defaults
 from prometheus_client import make_wsgi_app
 
@@ -34,13 +33,7 @@ def assertIn(self, item, iterable):
                 )
             )
 
-    @parameterized.expand([
-        ["counter", "A counter", 2],
-        ["counter", "Another counter", 3],
-        ["requests", "Number of requests", 5],
-        ["failed_requests", "Number of failed requests", 7],
-    ])
-    def test_reports_metrics(self, metric_name, help_text, increments):
+    def validate_metrics(self, metric_name, help_text, increments):
         """
         WSGI app serves the metrics from the provided registry.
         """
@@ -62,3 +55,15 @@ def test_reports_metrics(self, metric_name, help_text, increments):
         self.assertIn("# HELP " + metric_name + "_total " + help_text + "\n", output)
         self.assertIn("# TYPE " + metric_name + "_total counter\n", output)
         self.assertIn(metric_name + "_total " + str(increments) + ".0\n", output)
+
+    def test_report_metrics_1(self):
+        self.validate_metrics("counter", "A counter", 2)
+
+    def test_report_metrics_2(self):
+        self.validate_metrics("counter", "Another counter", 3)
+
+    def test_report_metrics_3(self):
+        self.validate_metrics("requests", "Number of requests", 5)
+
+    def test_report_metrics_4(self):
+        self.validate_metrics("failed_requests", "Number of failed requests", 7)
diff --git a/tox.ini b/tox.ini
index 34329226..6cfef861 100644
--- a/tox.ini
+++ b/tox.ini
@@ -6,7 +6,6 @@ envlist = coverage-clean,py26,py27,py34,py35,py36,py37,py38,pypy,pypy3,{py27,py3
 deps =
     coverage
     pytest
-    parameterized
 
 [testenv:py26]
 ; Last pytest and py version supported on py26 .
@@ -16,7 +15,6 @@ deps =
   pytest==2.9.2
   coverage
   futures
-  parameterized
 
 [testenv:py27]
 deps =