diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 54a75f69..670e0933 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -5,8 +5,6 @@ variables:
   LATEST_PYTHON:
     description: "The latest python version used to test this project."
     options:
-      - "3.9"
-      - "3.10"
       - "3.11"
       - "3.12"
       - "3.13"
@@ -14,7 +12,7 @@ variables:
   LINUX_CI_TOX_ENV:
     # Run coverage only with one Python version as this is costly.
     description: "Tox environments to run on Linux."
-    value: "py39-cov-xdist,py310-xdist,py311-xdist,py312-xdist,py313-xdist"
+    value: "py311-xdist,py312-xdist,py313-xdist"
   WINDOWS_CI_TOX_ENV:
     description: "Tox environments to run on Windows."
     value: "py312-xdist"
diff --git a/tox.ini b/tox.ini
index 33ba5992..187a40d1 100644
--- a/tox.ini
+++ b/tox.ini
@@ -18,8 +18,6 @@ setenv =
     # Set COVERAGE_CORE only for Python >= 3.12
     COVERAGE_CORE=sysmon
     py311: COVERAGE_CORE=
-    py310: COVERAGE_CORE=
-    py39: COVERAGE_CORE=
 
 # Run testsuite with coverage when '-cov' and with multi-threading when '-xdist'
 # is in the env name