diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index 645b3ea..2978d02 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -17,7 +17,7 @@ python -m pip install --upgrade pip poetry
 python -m poetry env use <PATH_TO_PYTHON_VERSION>
 
 # install package dependencies including dev dependencies
-python -m poetry install --dev
+python -m poetry install
 
 # Activate virtualenv
 python -m poetry shell
diff --git a/pyproject.toml b/pyproject.toml
index d6012fe..ae6fc1b 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "python-keycloak"
-version = "1.9.0"
+version = "0.0.0"
 description = "python-keycloak is a Python package providing access to the Keycloak API."
 license = "MIT"
 readme = "README.md"
diff --git a/tox.ini b/tox.ini
index c5c4d5b..b88069a 100644
--- a/tox.ini
+++ b/tox.ini
@@ -7,7 +7,7 @@ install_command = pip install {opts} {packages}
 deps =
     poetry>=1.1.13
 commands_pre =
-    bash -c "python -m pip install -r <(poetry export --dev --extras=docs --no-interaction)"
+    bash -c "python -m pip install -r <(poetry export --dev --extras=docs --without-hashes --no-interaction)"
 whitelist_externals =
     bash