diff --git a/tests/tests.yml b/tests/tests.yml
index d26ece2..558953f 100644
--- a/tests/tests.yml
+++ b/tests/tests.yml
@@ -10,18 +10,12 @@
     tests:
     - smoke:
         dir: python/smoke
-        run: VERSION=3.7 ./venv.sh
+        run: VERSION=3.8 ./venv.sh
     - selftest:
         dir: python/selftest
-        run: VERSION=3.7 X="-x test_socket -x test_asyncgen -x test_asyncio -x test_compile -x test_concurrent_futures -x test_itertools -x test_multiprocessing_fork -x test_multiprocessing_forkserver -x test_shutil -x test_time -x test_multiprocessing_spawn -x test_threading -x test_wsgiref" ./parallel.sh
-    - findleaks:
-        dir: python/selftest
-        run: VERSION=3.7 X="-x test_socket -x test_asyncgen -x test_asyncio -x test_compile -x test_concurrent_futures -x test_itertools -x test_multiprocessing_fork -x test_multiprocessing_forkserver -x test_shutil -x test_time -x test_multiprocessing_spawn -x test_threading -x test_wsgiref" ./findleaks.sh
+        run: VERSION=3.8 X="-x test_socket -x test_asyncgen -x test_asyncio -x test_compile -x test_concurrent_futures -x test_itertools -x test_multiprocessing_fork -x test_multiprocessing_forkserver -x test_shutil -x test_time -x test_multiprocessing_spawn -x test_threading -x test_wsgiref" ./parallel.sh
     required_packages:
     - gcc  # for extension building in venv and selftest
-    - python3-debug  # for leak testing
-    - python3-devel  # for extension building in venv and selftest
-    - python3-tkinter  # for selftest
-    - python3-test  # for selftest
+    - python38  # the test subject
     - python3-tox  # for venv tests
     - glibc-all-langpacks # for locale tests