diff --git a/.github/workflows/build_document.yml b/.github/workflows/build_document.yml
index 484bb5f..0dc5d19 100644
--- a/.github/workflows/build_document.yml
+++ b/.github/workflows/build_document.yml
@@ -11,7 +11,7 @@ permissions:
   contents: read
 
 env:
-  python_version: 3.8
+  python_version: 3.9
 
 jobs:
   build_document:
diff --git a/.github/workflows/sonarcloud_check.yml b/.github/workflows/sonarcloud_check.yml
index bd9ee89..59a6e8a 100644
--- a/.github/workflows/sonarcloud_check.yml
+++ b/.github/workflows/sonarcloud_check.yml
@@ -25,7 +25,7 @@ jobs:
       - name: Set up Python
         uses: actions/setup-python@v5
         with:
-          python-version: 3.8
+          python-version: 3.9
 
       - name: Install dependencies
         run: |
diff --git a/sonar-project.properties b/sonar-project.properties
index c5658f8..5b68655 100644
--- a/sonar-project.properties
+++ b/sonar-project.properties
@@ -4,4 +4,4 @@ sonar.organization=vil02
 sonar.exclusions=coverage_for_sonacloud.xml
 sonar.coverage.exclusions=**/test_*, **/make_*, **/example_*
 sonar.python.coverage.reportPaths=coverage_for_sonacloud.xml
-sonar.python.version=3.7, 3.8, 3.9, 3.10
+sonar.python.version=3.9, 3.10, 3.11