diff --git a/.gitattributes b/.gitattributes
index 15d62d6..2c85720 100644
--- a/.gitattributes
+++ b/.gitattributes
@@ -1,2 +1 @@
 poetry.lock linguist-generated=true
-setup.py linguist-generated=true
diff --git a/.github/actions/prepare_poetry_env/action.yml b/.github/actions/prepare_poetry_env/action.yml
index 076b029..0c49983 100644
--- a/.github/actions/prepare_poetry_env/action.yml
+++ b/.github/actions/prepare_poetry_env/action.yml
@@ -13,7 +13,7 @@ runs:
         python-version: ${{ inputs.python-version }}
     - uses: abatilo/actions-poetry@v2
       with:
-        poetry-version: 1.2.0
+        poetry-version: 1.4.0
     - name: Poetry install
       run: poetry install
       shell: bash
diff --git a/.github/workflows/check_ci.yaml b/.github/workflows/check_ci.yaml
index d43e29d..bbaf81f 100644
--- a/.github/workflows/check_ci.yaml
+++ b/.github/workflows/check_ci.yaml
@@ -3,20 +3,13 @@ name: Run Unit Tests
 on: [push]
 
 jobs:
-  check_setup_py:
+  run_unit_tests:
     environment: AWS
     runs-on: ubuntu-latest
 
     steps:
     - uses: actions/checkout@v3
-    - uses: actions/setup-python@v2
-      with:
-        python-version: 3.8
-    - uses: abatilo/actions-poetry@v2
-      with:
-        poetry-version: 1.2.0
-    - name: Setup poetry env
-      run:  bash scripts/build/setup_poetry_env.sh "python3.8"
+    - uses: ./.github/actions/prepare_poetry_env
 
     - name: Run pytest
       run: poetry run pytest
diff --git a/.github/workflows/check_setup_py.yaml b/.github/workflows/check_setup_py.yaml
deleted file mode 100644
index ad67770..0000000
--- a/.github/workflows/check_setup_py.yaml
+++ /dev/null
@@ -1,20 +0,0 @@
-name: Check packaging is up to date
-
-on: [push]
-
-jobs:
-  check_setup_py:
-    runs-on: ubuntu-latest
-
-    steps:
-    - uses: actions/checkout@v3
-    - uses: actions/setup-python@v2
-      with:
-        python-version: 3.8
-    - uses: abatilo/actions-poetry@v2
-      with:
-        poetry-version: 1.2.0
-    - name: Run packaging update
-      run: bash githooks/update_packaging.sh "python3.8"
-    - name: Check git status
-      run: bash scripts/build/check_git_status.sh
diff --git a/.github/workflows/check_version.yaml b/.github/workflows/check_version.yaml
index fd6aa8c..bd47494 100644
--- a/.github/workflows/check_version.yaml
+++ b/.github/workflows/check_version.yaml
@@ -12,13 +12,6 @@ jobs:
       - uses: actions/checkout@v3
         with:
           fetch-depth: 0
-      - name: Setup Python 3.8
-        uses: actions/setup-python@v2
-        with:
-          python-version: 3.8
-      - name: Install Poetry
-        uses: abatilo/actions-poetry@v2
-        with:
-          poetry-version: 1.2.0
+      - uses: ./.github/actions/prepare_poetry_env
       - name: Check Release
         run: ./scripts/build/check_release.sh "python3.8"
diff --git a/doc/changes/changelog.md b/doc/changes/changelog.md
index 9e44c67..83ce934 100644
--- a/doc/changes/changelog.md
+++ b/doc/changes/changelog.md
@@ -1,5 +1,6 @@
 # Changes
 
+* [1.1.0](changes_1.1.0.md)
 * [1.0.0](changes_1.0.0.md)
 * [0.8.0](changes_0.8.0.md)
 * [0.7.0](changes_0.7.0.md)
diff --git a/doc/changes/changes_1.0.0.md b/doc/changes/changes_1.0.0.md
index ea1b0ed..5d4183c 100644
--- a/doc/changes/changes_1.0.0.md
+++ b/doc/changes/changes_1.0.0.md
@@ -1,4 +1,4 @@
-# script-languages-container-ci-setup 0.8.0, released 2023-03-22
+# script-languages-container-ci-setup 1.0.0, released 2023-03-22
 
 Code name: Release on PyPi
 
diff --git a/doc/changes/changes_1.1.0.md b/doc/changes/changes_1.1.0.md
new file mode 100644
index 0000000..8ca0b1f
--- /dev/null
+++ b/doc/changes/changes_1.1.0.md
@@ -0,0 +1,23 @@
+# script-languages-container-ci-setup 1.1.0, released TBD
+
+Code name: TBD
+
+## Summary
+
+TBD
+
+## Bug Fixes
+
+n/a
+
+## Features / Enhancements
+
+n/a
+
+## Documentation
+
+n/a
+
+## Refactoring
+
+ - #43: Removed setup.py and updated to poetry 1.4.0
diff --git a/githooks/update_packaging.sh b/githooks/update_packaging.sh
deleted file mode 100755
index b84d29f..0000000
--- a/githooks/update_packaging.sh
+++ /dev/null
@@ -1,44 +0,0 @@
-#!/bin/bash
-set -o errexit
-set -o nounset
-set -o pipefail
-
-# define colors for use in output
-no_color='\033[0m'
-grey='\033[0;90m'
-
-# Jump to the current project's root directory (the one containing
-# .git/)
-ROOT_DIR=$(git rev-parse --show-toplevel || echo)
-NO_GIT=FALSE
-if [ -z "$ROOT_DIR" ]
-then
-  echo "Did not found git repository, using '$PWD' as ROOT_DIR"
-  NO_GIT=TRUE
-  ROOT_DIR=$PWD
-fi
-
-#pushd "$ROOT_DIR" > /dev/null
-pushd "$ROOT_DIR"
-
-echo -e "Generate setup.py ${grey}(pre-commit hook)${no_color}"
-if [ -d "dist" ]
-then
-  rm -r "dist"
-fi
-poetry build > /dev/null
-pushd dist > /dev/null
-tar_file=$(ls -- *.tar.gz)
-extracted_dir=${tar_file%.tar.gz}
-tar -xf "$tar_file"
-cp "$extracted_dir/setup.py" ../setup.py
-rm -r "$extracted_dir"
-popd > /dev/null
-
-if [ "$NO_GIT" == "FALSE" ]
-then
-  echo -e "Add generated files ${grey}(pre-commit hook)${no_color}"
-  git add setup.py
-fi
-
-popd > /dev/null
diff --git a/pyproject.toml b/pyproject.toml
index 938205e..1d36fdb 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "exasol-script-languages-container-ci-setup"
-version = "1.0.0"
+version = "1.1.0"
 description = "Manages AWS cloud CI build infrastructure."
 
 license = "MIT"
diff --git a/scripts/build/check_git_status.sh b/scripts/build/check_git_status.sh
deleted file mode 100755
index 7b8e873..0000000
--- a/scripts/build/check_git_status.sh
+++ /dev/null
@@ -1,7 +0,0 @@
-#!/bin/bash
-
-#Prints git status and returns > 0 if working tree is dirty! If working tree is clean, it returns 0.
-
-git status --porcelain=v1 -uno
-git diff --cached; git diff --cached --summary;
-[ -z "$(git status --porcelain=v1 -uno 2>/dev/null)" ]
diff --git a/setup.py b/setup.py
deleted file mode 100644
index 53827bc..0000000
--- a/setup.py
+++ /dev/null
@@ -1,40 +0,0 @@
-# -*- coding: utf-8 -*-
-from setuptools import setup
-
-packages = \
-['exasol_script_languages_container_ci_setup',
- 'exasol_script_languages_container_ci_setup.cli',
- 'exasol_script_languages_container_ci_setup.cli.commands',
- 'exasol_script_languages_container_ci_setup.cli.options',
- 'exasol_script_languages_container_ci_setup.lib']
-
-package_data = \
-{'': ['*'], 'exasol_script_languages_container_ci_setup': ['templates/*']}
-
-install_requires = \
-['PyGithub>=1.55.0,<2.0.0',
- 'boto3>=1.22.0,<2.0.0',
- 'click>=8.1.3,<9.0.0',
- 'exasol-script-languages-container-ci>=1.0.0,<2.0.0',
- 'exasol_error_reporting_python>=0.3.0,<0.4.0',
- 'jinja2>=3.1.0',
- 'jsonschema>=4.17.3,<5.0.0']
-
-setup_kwargs = {
-    'name': 'exasol-script-languages-container-ci-setup',
-    'version': '1.0.0',
-    'description': 'Manages AWS cloud CI build infrastructure.',
-    'long_description': 'None',
-    'author': 'Thomas Uebensee',
-    'author_email': 'ext.thomas.uebensee@exasol.com',
-    'maintainer': 'None',
-    'maintainer_email': 'None',
-    'url': 'None',
-    'packages': packages,
-    'package_data': package_data,
-    'install_requires': install_requires,
-    'python_requires': '>=3.8.0,<4.0',
-}
-
-
-setup(**setup_kwargs)