diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 986298f..bc5fa64 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -30,7 +30,7 @@ jobs:
               python3-setuptools
             task: PYTHONPATH=./src make -f Makefile coverage
     runs-on: ubuntu-latest
-    container: fedora:41  # CURRENT DEVELOPMENT ENVIRONMENT
+    container: fedora:42  # CURRENT DEVELOPMENT ENVIRONMENT
     steps:
       - uses: actions/checkout@v5
         with:
@@ -50,7 +50,7 @@ jobs:
           - dependencies: python3-into-dbus-python
             task: PYTHONPATH=./src make -f Makefile test
     runs-on: ubuntu-latest
-    container: fedora:41  # CURRENT DEVELOPMENT ENVIRONMENT
+    container: fedora:42  # CURRENT DEVELOPMENT ENVIRONMENT
     steps:
       - name: Install python3.12
         run: >
diff --git a/setup.cfg b/setup.cfg
index cb1b5e5..c868229 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -22,6 +22,7 @@ classifiers=
     Topic :: Software Development :: Libraries :: Python Modules
 
 [options]
+python_requires = >=3.12
 install_requires =
     dbus-python
     into-dbus-python>=0.8