diff --git a/.stestr.conf b/.stestr.conf
index b0bcaeef77..a04547d97e 100644
--- a/.stestr.conf
+++ b/.stestr.conf
@@ -1,3 +1,4 @@
 [DEFAULT]
 test_path=${TEST_PATH:-./glance/tests/unit}
 top_dir=./
+group_regex=(glance\.tests\.functional\.serial\.[^.]+\.)
diff --git a/serial-functests.txt b/serial-functests.txt
deleted file mode 100644
index 7e37e789b3..0000000000
--- a/serial-functests.txt
+++ /dev/null
@@ -1 +0,0 @@
-^glance\.tests\.functional\.serial\.*
diff --git a/tools/generate-blacklist.sh b/tools/generate-blacklist.sh
deleted file mode 100755
index a42f628a4b..0000000000
--- a/tools/generate-blacklist.sh
+++ /dev/null
@@ -1,9 +0,0 @@
-#!/bin/bash -xe
-
-TOX_INI_DIR="$1"
-TOX_TMP_DIR="$2"
-
-cat "${TOX_INI_DIR}/serial-functests.txt" \
-    "${TOX_INI_DIR}/broken-functional-py35-ssl-tests.txt" > \
-    "${TOX_TMP_DIR}/func-py35-blacklist.txt"
-
diff --git a/tox.ini b/tox.ini
index ccf5aaec8a..8ba81e1ce6 100644
--- a/tox.ini
+++ b/tox.ini
@@ -40,8 +40,7 @@ setenv =
   TEST_PATH = ./glance/tests/functional
 ignore_errors = True
 commands =
-  stestr run --blacklist-file ./serial-functests.txt {posargs}
-  stestr run --serial --combine --whitelist-file ./serial-functests.txt {posargs}
+  stestr run {posargs}
 
 [testenv:functional-py35]
 basepython = python3.5
@@ -51,11 +50,7 @@ ignore_errors = True
 whitelist_externals =
   bash
 commands =
-  # NOTE(rosmaita): calling this script is a complete hack, everything
-  # is hard-coded.
-  bash tools/generate-blacklist.sh {toxinidir} {envtmpdir}
-  stestr run --blacklist-file {envtmpdir}/func-py35-blacklist.txt {posargs}
-  stestr run --serial --combine --whitelist-file ./serial-functests.txt {posargs}
+  stestr run --blacklist-file ./broken-functional-py35-ssl-tests.txt {posargs}
 
 [testenv:broken-py35-ssl-tests]
 # NOTE(rosmaita): these tests were being skipped due to bug #1482633, but we