diff --git a/.github/workflows/tests.yaml b/.github/workflows/tests.yaml
index cc8040db..15464764 100644
--- a/.github/workflows/tests.yaml
+++ b/.github/workflows/tests.yaml
@@ -53,8 +53,8 @@ jobs:
         uses: astral-sh/setup-uv@v3
         with:
           enable-cache: true
-      - name: Install Python 3.13
-        run: uv python install 3.13
+      - name: Install Python 3.10
+        run: uv python install 3.10
       - name: Install apt dependencies
         run: |
           sudo apt update
diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index aa48225e..7871b506 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -63,7 +63,7 @@ tests:
 minversions:
   needs: ["tests"]
   variables:
-    PYTHON_VERSION: 3.13
+    PYTHON_VERSION: 3.10
   image: ghcr.io/astral-sh/uv:$UV_VERSION-python$PYTHON_VERSION-$BASE_LAYER
   stage: test
   script:
diff --git a/pyproject.toml b/pyproject.toml
index 57009786..51b6d251 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -211,6 +211,7 @@ commands = [
 
 [tool.tox.env.minversions]
 uv_resolution = "lowest-direct"
+basepython = ["python3.10"]
 commands = [
     ["pytest", "--showlocals", "--full-trace", "{posargs}"],
 ]