diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index ca0375e..3fc34e4 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -6,7 +6,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: [3.8, 3.7]
+        python-version: [3.8]
         plone-version: [5.2]
 
     steps:
@@ -30,7 +30,7 @@ jobs:
       # Firefox
       - uses: browser-actions/setup-firefox@latest
         with:
-          firefox-version: '89.0'
+          firefox-version: '102.6.0esr'
       - run: firefox --version
 
       # python install
diff --git a/CHANGES.rst b/CHANGES.rst
index 32a76b0..035fc9c 100644
--- a/CHANGES.rst
+++ b/CHANGES.rst
@@ -1,12 +1,15 @@
 Changelog
 =========
 
-2.0.2 (unreleased)
+3.0.0 (unreleased)
 ------------------
 
 - Fix JSON call URL in non-rooted virtual host environments. Fixes #37
   [erral]
 
+- Drop support to Python 3.7.
+  [wesleybl]
+
 
 2.0.1 (2021-09-16)
 ------------------
diff --git a/Makefile b/Makefile
index fa3daac..b4de552 100644
--- a/Makefile
+++ b/Makefile
@@ -20,14 +20,6 @@ all: .installed.cfg
 help: ## This help message
 	@grep -E '^[a-zA-Z_-]+:.*?## .*$$' $(MAKEFILE_LIST) | sort | awk 'BEGIN {FS = ":.*?## "}; {printf "\033[36m%-30s\033[0m %s\n", $$1, $$2}'
 
-.PHONY: Update Makefile and Buildout
-update: ## Update Make and Buildout
-	wget -O Makefile https://raw.githubusercontent.com/kitconcept/buildout/5.2/Makefile
-	wget -O requirements.txt https://raw.githubusercontent.com/kitconcept/buildout/5.2/requirements.txt
-	wget -O plone-5.2.x.cfg https://raw.githubusercontent.com/kitconcept/buildout/5.2/plone-5.2.x.cfg
-	wget -O ci.cfg https://raw.githubusercontent.com/kitconcept/buildout/5.2/ci.cfg
-	wget -O versions.cfg https://raw.githubusercontent.com/kitconcept/buildout/5.2/versions.cfg
-
 .installed.cfg: bin/buildout *.cfg
 	bin/buildout
 
diff --git a/plone-5.2.x.cfg b/plone-5.2.x.cfg
index 3ca915f..dbc7af7 100644
--- a/plone-5.2.x.cfg
+++ b/plone-5.2.x.cfg
@@ -1,19 +1,4 @@
 [buildout]
 extends =
-    https://dist.plone.org/release/5.2.5/versions.cfg
+    https://dist.plone.org/release/5.2.14/versions.cfg
     base.cfg
-find-links += https://dist.plone.org/thirdparty/
-versions=versions
-
-[versions]
-black = 21.7b0
-
-# Error: The requirement ('virtualenv>=20.0.35') is not allowed by your [versions] constraint (20.0.26)
-virtualenv = 20.0.35
-
-# Error: The requirement ('importlib-metadata>=1') is not allowed by your [versions] constraint (0.23)
-importlib-metadata = 2.0.0
-
-# cffi 1.14.3 fails on apple m1
-# cffi 1.14.4 fails with "ModuleNotFoundError: No module named '_cffi_backend'"
-cffi = 1.14.6
diff --git a/requirements-5.2.txt b/requirements-5.2.txt
new file mode 100644
index 0000000..37660fa
--- /dev/null
+++ b/requirements-5.2.txt
@@ -0,0 +1 @@
+-r https://dist.plone.org/release/5.2.14/requirements.txt
diff --git a/requirements.txt b/requirements.txt
index 8466fed..05fc900 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,4 +1 @@
-# Keep this file in sync with: https://github.com/kitconcept/buildout/edit/master/requirements.txt
-setuptools==42.0.2
-zc.buildout==2.13.3
-wheel
+-r requirements-5.2.txt
diff --git a/setup.py b/setup.py
index 7c625ba..fbf9663 100644
--- a/setup.py
+++ b/setup.py
@@ -4,7 +4,7 @@
 from setuptools import setup
 
 
-version = '2.0.2.dev0'
+version = '3.0.0.dev0'
 
 long_description = '\n\n'.join([
     open('README.rst').read(),
@@ -28,7 +28,6 @@
         'Operating System :: OS Independent',
         'Programming Language :: JavaScript',
         'Programming Language :: Python',
-        'Programming Language :: Python :: 3.7',
         'Programming Language :: Python :: 3.8',
         'Topic :: Software Development :: Libraries :: Python Modules',
         'Topic :: Software Development :: Widget Sets',
diff --git a/versions.cfg b/versions.cfg
deleted file mode 100644
index ef8e703..0000000
--- a/versions.cfg
+++ /dev/null
@@ -1,52 +0,0 @@
-[versions]
-# Buildout
-setuptools =
-zc.buildout =
-zc.recipe.egg = 2.0.3
-
-# fixes Getting distribution for 'configparser'. assert newdist is not None  # newloc above is missing our dist?!
-configparser = 3.5.3
-
-# fixes Error: The requirement ('Pygments>=2.5.1') is not allowed by your [versions] constraint (2.2.0)
-Pygments = 2.5.1
-
-# plone.recipe.varnish
-plone.recipe.varnish = 1.3
-
-# Code-analysis
-plone.recipe.codeanalysis = 3.0.1
-coverage = 3.7.1
-pep8 = 1.7.1
-flake8 = 3.5.0
-flake8-coding = 1.3.2
-pycodestyle = 2.3.1
-
-# Release
-zest.releaser = 6.17.0
-twine = 1.11.0
-towncrier = 19.2.0
-zestreleaser.towncrier = 1.1.0
-docutils = 0.16
-
-# Sphinx
-Sphinx = 1.6.5
-Pygments = 2.5.1
-sphinxcontrib-httpexample = 0.7.0
-sphinxcontrib-httpdomain = 1.5.0
-sphinx-rtd-theme = 0.2.4
-Jinja2 = 2.10
-Babel = 2.5.1
-
-# plone.rest(api) specific pins
-
-# cffi 1.14.3 fails on apple m1
-cffi = 1.14.4
-
-[versions:python27]
-PyJWT = 1.7.1
-pyroma = 2.6.1
-more-itertools = 5.0.0
-pyrsistent = 0.15.7
-Click = 7.1.2
-httpie = 1.0.3
-check-manifest = 0.41