diff --git a/dev-requirements.txt b/dev-requirements.txt
deleted file mode 100644
index 9163cf81..00000000
--- a/dev-requirements.txt
+++ /dev/null
@@ -1,6 +0,0 @@
-zest.releaser
-tox
-pytest
-flake8
-Flask-Testing
-black ; python_version >= '3.6'
diff --git a/requirements.txt b/requirements.txt
deleted file mode 100644
index 45bfbf28..00000000
--- a/requirements.txt
+++ /dev/null
@@ -1,30 +0,0 @@
-alembic==1.4.2
-aniso8601==8.0.0
-Babel==2.8.0
-blinker==1.4
-click==7.1.1
-debts==0.5
-dnspython==1.16.0
-email-validator==1.0.5
-Flask==1.1.2
-Flask-Babel==1.0.0
-Flask-Cors==3.0.8
-Flask-Mail==0.9.1
-Flask-Migrate==2.5.3
-Flask-RESTful==0.3.8
-Flask-Script==2.0.6
-Flask-SQLAlchemy==2.4.1
-Flask-WTF==0.14.3
-idna==2.9
-itsdangerous==1.1.0
-Jinja2==2.11.2
-Mako==1.1.2
-MarkupSafe==1.1.1
-python-dateutil==2.8.1
-pytz==2019.3
-six==1.14.0
-SQLAlchemy==1.3.16
-SQLAlchemy-Continuum==1.3.9
-SQLAlchemy-Utils==0.36.3
-Werkzeug==1.0.1
-WTForms==2.2.1
diff --git a/setup.cfg b/setup.cfg
index 8d334e80..10fef113 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -14,6 +14,7 @@ classifiers =
     Programming Language :: Python :: 3.5
     Programming Language :: Python :: 3.6
     Programming Language :: Python :: 3.7
+    Programming Language :: Python :: 3.8
     Topic :: Internet :: WWW/HTTP
     Topic :: Internet :: WWW/HTTP :: WSGI :: Application
 
@@ -22,29 +23,30 @@ packages = find:
 include_package_data = True
 zip_safe = False
 install_requires =
-    flask
-    flask-wtf
-    flask-sqlalchemy<3.0
-    SQLAlchemy-Continuum
-    flask-mail
-    Flask-Migrate
-    Flask-script
-    flask-babel
-    flask-restful
-    jinja2
-    blinker
-    flask-cors
-    itsdangerous
-    email_validator
-    debts
+    blinker==1.4
+    debts==0.5
+    email_validator==1.0.5
+    Flask-Babel==1.0.0
+    Flask-Cors==3.0.8
+    Flask-Mail==0.9.1
+    Flask-Migrate==2.5.3
+    Flask-RESTful==0.3.8
+    Flask-Script==2.0.6
+    Flask-SQLAlchemy==2.4.1
+    Flask-WTF==0.14.3
+    Flask==1.1.2
+    itsdangerous==1.1.0
+    Jinja2==2.11.2
+    SQLAlchemy-Continuum==1.3.9
 
 [options.extras_require]
 dev =
-    zest.releaser
-    tox
-    pytest
-    flake8
-    Flask-Testing
+    black==19.10b0
+    flake8==3.7.9
+    Flask-Testing==0.8.0
+    pytest==5.4.1
+    tox==3.14.6
+    zest.releaser==6.20.1
 
 [options.entry_points]
 console_scripts =
diff --git a/tox.ini b/tox.ini
index 5e6d5e42..b5ff7055 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,5 +1,5 @@
 [tox]
-envlist = py37,py36,py35,docs,flake8,black
+envlist = py38,py37,py36,py35,docs,flake8,black
 skip_missing_interpreters = True
 
 [testenv]
@@ -9,8 +9,7 @@ commands =
     py.test --pyargs ihatemoney.tests.tests
 
 deps =
-    -rdev-requirements.txt
-    -rrequirements.txt
+    -e.[dev]
 
 # To be sure we are importing ihatemoney pkg from pip-installed version
 changedir = /tmp
@@ -23,14 +22,10 @@ changedir = {toxinidir}
 
 [testenv:black]
 commands = black --check --target-version=py34 .
-deps =
-    -rdev-requirements.txt
 changedir = {toxinidir}
 
 [testenv:flake8]
 commands = flake8 ihatemoney
-deps =
-    -rdev-requirements.txt
 changedir = {toxinidir}
 
 [flake8]
@@ -43,5 +38,6 @@ extend-ignore =
 [travis]
 python =
   3.5: py35
-  3.6: py36, docs, black, flake8
+  3.6: py36
   3.7: py37
+  3.8: py38, docs, black, flake8