diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 0b99040..ee7679c 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -1,7 +1,7 @@
 ---
 run pylint:
   stage: test
-  image: python:3.9
+  image: python:3.11
   script:
     - pip install --upgrade pylint
     - pylint $(git ls-files '*.py')
@@ -10,7 +10,7 @@ run pylint:
 
 run flake8:
   stage: test
-  image: python:3.9
+  image: python:3.11
   script:
     - pip install --upgrade flake8
     - flake8 $(git ls-files '*.py')
@@ -19,7 +19,7 @@ run flake8:
 
 run mypy:
   stage: test
-  image: python:3.9
+  image: python:3.11
   script:
     - pip install --upgrade mypy
     - mypy --install-types --non-interactive $(git ls-files '*.py')
@@ -28,7 +28,7 @@ run mypy:
 
 run tests:
   stage: test
-  image: python:3.9
+  image: python:3.11
   script:
     - pip install pytest pytest-cov pytest-mock pytest-flask
     - pip install Flask-HTTPAuth