diff --git a/test/centos7.Dockerfile b/test/centos_7.Dockerfile
similarity index 100%
rename from test/centos7.Dockerfile
rename to test/centos_7.Dockerfile
diff --git a/test/centos.Dockerfile b/test/centos_8.Dockerfile
similarity index 100%
rename from test/centos.Dockerfile
rename to test/centos_8.Dockerfile
diff --git a/test/conftest.py b/test/conftest.py
index 3fd2524a..cda861c1 100644
--- a/test/conftest.py
+++ b/test/conftest.py
@@ -70,12 +70,10 @@ def args(request):
 
 
 @pytest.fixture(params=[
-    'debian',
     'debian_9',
     'debian_10',
-    'centos7',
-    'centos',
-    'fedora',
+    'centos_7',
+    'centos_8',
     'fedora_31',
     'fedora_32',
     'ubuntu_16',
diff --git a/test/debian.Dockerfile b/test/debian.Dockerfile
deleted file mode 100644
index d6609ba3..00000000
--- a/test/debian.Dockerfile
+++ /dev/null
@@ -1,16 +0,0 @@
-FROM buildpack-deps:stretch-scm
-
-ENV GITDIR /etc/.pihole
-ENV SCRIPTDIR /opt/pihole
-
-RUN mkdir -p $GITDIR $SCRIPTDIR /etc/pihole
-ADD . $GITDIR
-RUN cp $GITDIR/advanced/Scripts/*.sh $GITDIR/gravity.sh $GITDIR/pihole $GITDIR/automated\ install/*.sh $SCRIPTDIR/
-ENV PATH /usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:$SCRIPTDIR
-
-RUN true && \
-    chmod +x $SCRIPTDIR/*
-
-ENV PH_TEST true
-
-#sed '/# Start the installer/Q' /opt/pihole/basic-install.sh > /opt/pihole/stub_basic-install.sh && \
diff --git a/test/fedora.Dockerfile b/test/fedora.Dockerfile
deleted file mode 100644
index 02dcb733..00000000
--- a/test/fedora.Dockerfile
+++ /dev/null
@@ -1,16 +0,0 @@
-FROM fedora:31
-
-ENV GITDIR /etc/.pihole
-ENV SCRIPTDIR /opt/pihole
-
-RUN mkdir -p $GITDIR $SCRIPTDIR /etc/pihole
-ADD . $GITDIR
-RUN cp $GITDIR/advanced/Scripts/*.sh $GITDIR/gravity.sh $GITDIR/pihole $GITDIR/automated\ install/*.sh $SCRIPTDIR/
-ENV PATH /usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:$SCRIPTDIR
-
-RUN true && \
-    chmod +x $SCRIPTDIR/*
-
-ENV PH_TEST true
-
-#sed '/# Start the installer/Q' /opt/pihole/basic-install.sh > /opt/pihole/stub_basic-install.sh && \
diff --git a/test/test_centos_fedora_support.py b/test/test_centos_fedora_support.py
index b4ae7c89..8dd0ee5f 100644
--- a/test/test_centos_fedora_support.py
+++ b/test/test_centos_fedora_support.py
@@ -23,7 +23,7 @@ def mock_selinux_config(state, Pihole):
     '''.format(state=state.lower()))
 
 
-@pytest.mark.parametrize("tag", [('centos'), ('fedora'), ])
+@pytest.mark.parametrize("tag", [('centos_7'), ('centos_8'), ('fedora_31'), ('fedora_32'), ])
 def test_selinux_enforcing_exit(Pihole):
     '''
     confirms installer prompts to exit when SELinux is Enforcing by default
@@ -40,7 +40,7 @@ def test_selinux_enforcing_exit(Pihole):
     assert check_selinux.rc == 1
 
 
-@pytest.mark.parametrize("tag", [('centos'), ('fedora'), ])
+@pytest.mark.parametrize("tag", [('centos_7'), ('centos_8'), ('fedora_31'), ('fedora_32'), ])
 def test_selinux_permissive(Pihole):
     '''
     confirms installer continues when SELinux is Permissive
@@ -55,7 +55,7 @@ def test_selinux_permissive(Pihole):
     assert check_selinux.rc == 0
 
 
-@pytest.mark.parametrize("tag", [('centos'), ('fedora'), ])
+@pytest.mark.parametrize("tag", [('centos_7'), ('centos_8'), ('fedora_31'), ('fedora_32'), ])
 def test_selinux_disabled(Pihole):
     '''
     confirms installer continues when SELinux is Disabled
@@ -70,7 +70,7 @@ def test_selinux_disabled(Pihole):
     assert check_selinux.rc == 0
 
 
-@pytest.mark.parametrize("tag", [('fedora'), ])
+@pytest.mark.parametrize("tag", [('fedora_31'), ('fedora_32'), ])
 def test_epel_and_remi_not_installed_fedora(Pihole):
     '''
     confirms installer does not attempt to install EPEL/REMI repositories
@@ -88,7 +88,7 @@ def test_epel_and_remi_not_installed_fedora(Pihole):
     assert not remi_package.is_installed
 
 
-@pytest.mark.parametrize("tag", [('centos7'), ('centos'), ])
+@pytest.mark.parametrize("tag", [('centos_7'), ('centos_8'), ])
 def test_release_supported_version_check_centos(Pihole):
     '''
     confirms installer exits on unsupported releases of CentOS
@@ -105,7 +105,7 @@ def test_release_supported_version_check_centos(Pihole):
     assert expected_stdout in distro_check.stdout
 
 
-@pytest.mark.parametrize("tag", [('centos7'), ('centos'), ])
+@pytest.mark.parametrize("tag", [('centos_7'), ('centos_8'), ])
 def test_enable_epel_repository_centos(Pihole):
     '''
     confirms the EPEL package repository is enabled when installed on CentOS
@@ -123,7 +123,7 @@ def test_enable_epel_repository_centos(Pihole):
     assert epel_package.is_installed
 
 
-@pytest.mark.parametrize("tag", [('centos7'), ])
+@pytest.mark.parametrize("tag", [('centos_7'), ])
 def test_php_upgrade_default_optout_centos_eq_7(Pihole):
     '''
     confirms the default behavior to opt-out of installing PHP7 from REMI
@@ -139,7 +139,7 @@ def test_php_upgrade_default_optout_centos_eq_7(Pihole):
     assert not remi_package.is_installed
 
 
-@pytest.mark.parametrize("tag", [('centos'), ])
+@pytest.mark.parametrize("tag", [('centos_8'), ])
 def test_php_upgrade_default_continue_centos_gte_8(Pihole):
     '''
     confirms the latest version of CentOS continues / does not optout
@@ -157,7 +157,7 @@ def test_php_upgrade_default_continue_centos_gte_8(Pihole):
     assert not remi_package.is_installed
 
 
-@pytest.mark.parametrize("tag", [('centos7'), ])
+@pytest.mark.parametrize("tag", [('centos_7'), ])
 def test_php_upgrade_user_optout_centos_eq_7(Pihole):
     '''
     confirms installer behavior when user opt-out of installing PHP7 from REMI
@@ -176,7 +176,7 @@ def test_php_upgrade_user_optout_centos_eq_7(Pihole):
     assert not remi_package.is_installed
 
 
-@pytest.mark.parametrize("tag", [('centos'), ])
+@pytest.mark.parametrize("tag", [('centos_8'), ])
 def test_php_upgrade_user_optout_skipped_centos_gte_8(Pihole):
     '''
     confirms installer skips user opt-out of installing PHP7 from REMI on
@@ -197,7 +197,7 @@ def test_php_upgrade_user_optout_skipped_centos_gte_8(Pihole):
     assert not remi_package.is_installed
 
 
-@pytest.mark.parametrize("tag", [('centos7'), ])
+@pytest.mark.parametrize("tag", [('centos_7'), ])
 def test_php_upgrade_user_optin_centos_eq_7(Pihole):
     '''
     confirms installer behavior when user opt-in to installing PHP7 from REMI
@@ -220,7 +220,7 @@ def test_php_upgrade_user_optin_centos_eq_7(Pihole):
     assert remi_package.is_installed
 
 
-@pytest.mark.parametrize("tag", [('centos'), ])
+@pytest.mark.parametrize("tag", [('centos_8'), ])
 def test_php_upgrade_user_optin_skipped_centos_gte_8(Pihole):
     '''
     confirms installer skips user opt-in to installing PHP7 from REMI on
@@ -244,7 +244,7 @@ def test_php_upgrade_user_optin_skipped_centos_gte_8(Pihole):
     assert not remi_package.is_installed
 
 
-@pytest.mark.parametrize("tag", [('centos7'), ('centos'), ])
+@pytest.mark.parametrize("tag", [('centos_7'), ('centos_8'), ])
 def test_php_version_lt_7_detected_upgrade_default_optout_centos(Pihole):
     '''
     confirms the default behavior to opt-out of upgrading to PHP7 from REMI
@@ -267,7 +267,7 @@ def test_php_version_lt_7_detected_upgrade_default_optout_centos(Pihole):
     assert not remi_package.is_installed
 
 
-@pytest.mark.parametrize("tag", [('centos7'), ('centos'), ])
+@pytest.mark.parametrize("tag", [('centos_7'), ('centos_8'), ])
 def test_php_version_lt_7_detected_upgrade_user_optout_centos(Pihole):
     '''
     confirms installer behavior when user opt-out to upgrade to PHP7 via REMI
@@ -292,7 +292,7 @@ def test_php_version_lt_7_detected_upgrade_user_optout_centos(Pihole):
     assert not remi_package.is_installed
 
 
-@pytest.mark.parametrize("tag", [('centos7'), ('centos'), ])
+@pytest.mark.parametrize("tag", [('centos_7'), ('centos_8'), ])
 def test_php_version_lt_7_detected_upgrade_user_optin_centos(Pihole):
     '''
     confirms installer behavior when user opt-in to upgrade to PHP7 via REMI
diff --git a/tox.ini b/tox.ini
index 17d19052..1142aea8 100644
--- a/tox.ini
+++ b/tox.ini
@@ -4,12 +4,10 @@ envlist = py37
 [testenv]
 whitelist_externals = docker
 deps = -rrequirements.txt
-commands = docker build -f test/debian.Dockerfile -t pytest_pihole:debian .
-           docker build -f test/debian_9.Dockerfile -t pytest_pihole:debian_9 .
+commands = docker build -f test/debian_9.Dockerfile -t pytest_pihole:debian_9 .
            docker build -f test/debian_10.Dockerfile -t pytest_pihole:debian_10 .
-           docker build -f test/centos7.Dockerfile -t pytest_pihole:centos7 .
-           docker build -f test/centos.Dockerfile -t pytest_pihole:centos .
-           docker build -f test/fedora.Dockerfile -t pytest_pihole:fedora .
+           docker build -f test/centos_7.Dockerfile -t pytest_pihole:centos_7 .
+           docker build -f test/centos_8.Dockerfile -t pytest_pihole:centos_8 .           
            docker build -f test/fedora_31.Dockerfile -t pytest_pihole:fedora_31 .
            docker build -f test/fedora_32.Dockerfile -t pytest_pihole:fedora_32 .
            docker build -f test/ubuntu_16.Dockerfile -t pytest_pihole:ubuntu_16 .