diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 028dfa2874b6d45f2641c2413b0d678b278cc069..ee1b1286676988d27444639c3079c9d64f3df833 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -1,4 +1,4 @@
-image: python:3.9
+image: clarinpl/python:3.8
 
 cache:
   paths:
@@ -20,7 +20,7 @@ unittests:
   stage: test
   script:
     - pip install tox==4.12
-    - tox -p -e python3.9
+    - tox -p -e python3.8
 
 pypi_publish:
   before_script:
diff --git a/tox.ini b/tox.ini
index 736f876af326e946dca4dc5edee1464d358ad219..09e9986337c259bbd5c2beddd3f3ca23872d3329 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,5 +1,5 @@
 [tox]
-envlist = python3.9
+envlist = python3.8
 skipsdist = True
 
 [testenv]