diff --git a/.github/workflows/cicd.yml b/.github/workflows/cicd.yml
index 4a657d1..a6b1576 100644
--- a/.github/workflows/cicd.yml
+++ b/.github/workflows/cicd.yml
@@ -41,7 +41,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python-version: ["3.11", "3.12"]
+        python-version: ["3.9", "3.10", "3.11", "3.12"]
     steps:
       - uses: actions/checkout@v4
       - name: Set up Python ${{ matrix.python-version }}
@@ -60,7 +60,7 @@ jobs:
       - name: Test Commandline Script
         run: |
           fetch_orcid_pubs --help
-        # fetch_orcid_pubs --orcid-id 0000-0001-8833-7617 --lastname Webel --output-file test.md
+          fetch_orcid_pubs --orcid-id 0000-0001-8833-7617 --lastname Webel --output-file test.md
   
   build_source_dist:
     name: Build source distribution
@@ -71,7 +71,7 @@ jobs:
 
         - uses: actions/setup-python@v5
           with:
-            python-version: "3.10"
+            python-version: "3.11"
 
         - name: Install build
           run: python -m pip install build
diff --git a/pyproject.toml b/pyproject.toml
index 834f23e..d0d02cf 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -8,8 +8,7 @@ name = "list-publications"
 # See the section below: [tools.setuptools.dynamic]
 dynamic = ["version"]
 readme = "README.md"
-# We use features for Python 3.11, so we test it here.
-requires-python = ">=3.11"
+requires-python = ">=3.9"
 # These are keywords
 classifiers = [
   "Programming Language :: Python :: 3",
@@ -42,6 +41,9 @@ docs = [
 [tool.ruff]
 ignore = ["E501"]
 
+[tool.flake8]
+max-line-length = 120
+
 [build-system]
 build-backend = "setuptools.build_meta"
 requires = ["setuptools>=64", "setuptools_scm>=8"]