diff --git a/.ci-before-script.sh b/.ci-before-script.sh
index 1c8e654..6cfba8d 100755
--- a/.ci-before-script.sh
+++ b/.ci-before-script.sh
@@ -2,7 +2,7 @@
 set -ex
 
 python -m pip install --upgrade pip
-pip install -r requirements_test.txt && python setup.py develop
+pip install -r requirements_test.txt && pip install -e .
 
 if [ "$STEP" != "tests" ]; then
     exit 0
diff --git a/.ci-runs-tests.sh b/.ci-runs-tests.sh
index 3e6f4fe..799b14e 100755
--- a/.ci-runs-tests.sh
+++ b/.ci-runs-tests.sh
@@ -4,7 +4,7 @@ env
 if [ "$STEP" = "tests" ]; then
     py.test --version
     export PYTHONPATH=.
-    python setup.py develop
+    pip install -e .
     py.test --cov=bmemcached
     exit 0
 fi
diff --git a/.github/workflows/tests-and-lint.yml b/.github/workflows/tests-and-lint.yml
index 39bd99c..dcd7aa9 100644
--- a/.github/workflows/tests-and-lint.yml
+++ b/.github/workflows/tests-and-lint.yml
@@ -12,7 +12,7 @@ jobs:
     strategy:
       max-parallel: 4
       matrix:
-        python-version: [3.7, 3.8, 3.9, "3.10", 3.11]
+        python-version: [3.8, 3.9, "3.10", 3.11, 3.12]
 
     steps:
       - uses: actions/checkout@v2
diff --git a/setup.py b/setup.py
index ce0b628..17ebd1d 100644
--- a/setup.py
+++ b/setup.py
@@ -25,13 +25,11 @@ def read(filename):
         "Development Status :: 4 - Beta",
         "License :: OSI Approved :: MIT License",
         "Operating System :: OS Independent",
-        "Programming Language :: Python :: 2.7",
-        "Programming Language :: Python :: 3.4",
-        "Programming Language :: Python :: 3.5",
-        "Programming Language :: Python :: 3.6",
-        "Programming Language :: Python :: 3.7",
         "Programming Language :: Python :: 3.8",
         "Programming Language :: Python :: 3.9",
+        "Programming Language :: Python :: 3.10",
+        "Programming Language :: Python :: 3.11",
+        "Programming Language :: Python :: 3.12",
     ],
     install_requires=[
         "six",
diff --git a/tox.ini b/tox.ini
index a7d5311..e313b34 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,7 +1,7 @@
 [tox]
-envlist = py27,py34,py35,py36,py37,py38,py39,py310
+envlist = py38,py39,py310,py311,py312
 [testenv]
 deps = -rrequirements_test.txt
-commands = python setup.py develop
+commands = pip install -e .
     py.test -s
     flake8