diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index c963e48..1f90914 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -1,5 +1,5 @@
 python2.7:
-  image: python:2.7-stretch
+  image: python:2.7-buster
   script:
     - pip install .[test]
     - pip install .
@@ -8,7 +8,7 @@ python2.7:
     - coverage report
 
 python3.5:
-  image: python:3.5-stretch
+  image: python:3.5-buster
   script:
     - pip install .[test]
     - pip install .
@@ -17,7 +17,7 @@ python3.5:
     - coverage report
 
 python3.6:
-  image: python:3.6-stretch
+  image: python:3.6-buster
   script:
     - pip install .[test]
     - pip install .
@@ -26,7 +26,7 @@ python3.6:
     - coverage report
 
 python3.7:
-  image: python:3.7-stretch
+  image: python:3.7-buster
   script:
     - pip install .[test]
     - pip install .
@@ -35,7 +35,7 @@ python3.7:
     - coverage report
 
 python3.8:
-  image: python:3.8-stretch
+  image: python:3.8-buster
   script:
     - pip install .[test]
     - pip install .