diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index ee80b11..4e002a7 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -32,7 +32,6 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: ["3.12"]
         visibility: ["private", "public"]
         stream_type: ["REST", "GraphQL"]
         auth_method:
@@ -50,7 +49,7 @@ jobs:
 
     - uses: actions/setup-python@v5
       with:
-        python-version: ${{ matrix.python-version }}
+        python-version: 3.x
 
     - uses: astral-sh/setup-uv@v3
 
@@ -86,7 +85,7 @@ jobs:
       run: >
         nox
         --install-only
-        -s "lint-${{ matrix.python-version }}(visibility='${{ matrix.visibility }}', auth_method='${{ matrix.auth_method }}', stream_type='${{ matrix.stream_type }}')"
+        -s "lint(visibility='${{ matrix.visibility }}', auth_method='${{ matrix.auth_method }}', stream_type='${{ matrix.stream_type }}')"
 
     - name: Run Nox
       env:
@@ -95,4 +94,4 @@ jobs:
         nox
         --reuse-existing-virtualenvs
         --no-install
-        -s "lint-${{ matrix.python-version }}(visibility='${{ matrix.visibility }}', auth_method='${{ matrix.auth_method }}', stream_type='${{ matrix.stream_type }}')"
+        -s "lint(visibility='${{ matrix.visibility }}', auth_method='${{ matrix.auth_method }}', stream_type='${{ matrix.stream_type }}')"
diff --git a/copier.yml b/copier.yml
index 1322f9b..669f7eb 100644
--- a/copier.yml
+++ b/copier.yml
@@ -129,7 +129,7 @@ repository_visibility:
 python_main_version:
   type: str
   help: Main Python version supported by this project
-  default: "3.12"
+  default: "3.13"
 
 vscode_files:
   type: bool
diff --git a/noxfile.py b/noxfile.py
index 9ee6614..4234c51 100644
--- a/noxfile.py
+++ b/noxfile.py
@@ -26,16 +26,9 @@
 [lint]
 extend-ignore = ["TD003"]
 """
-python_versions = [
-    "3.13",
-    "3.12",
-    "3.11",
-    "3.10",
-    "3.9",
-]
 
 
-@nox.session(python=python_versions)
+@nox.session()
 @nox.parametrize("stream_type", STREAM_TYPES)
 @nox.parametrize("auth_method", AUTH_METHODS)
 @nox.parametrize("visibility", VISIBILITIES)