diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 29432a002..d1aafa944 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -37,11 +37,10 @@ env:
 
 jobs:
   tests:
-    name: "Test on ${{ matrix.python-version }} (${{ matrix.session }}) / ${{ matrix.os }} / SQLAlchemy: ${{ matrix.sqlalchemy }}"
+    name: "Test on ${{ matrix.python-version || '3.x' }} (${{ matrix.session }}) / ${{ matrix.os }} / SQLAlchemy: ${{ matrix.sqlalchemy }}"
     runs-on: ${{ matrix.os }}
     continue-on-error: true
     env:
-      NOXPYTHON: ${{ matrix.python-version }}
       NOXSESSION: ${{ matrix.session }}
     strategy:
       fail-fast: false
@@ -57,10 +56,10 @@ jobs:
         - "3.13"
         sqlalchemy: ["2"]
         include:
-        - { session: tests,   python-version: "3.13", os: "ubuntu-latest", sqlalchemy: "1" }
-        - { session: doctest, python-version: "3.13", os: "ubuntu-latest", sqlalchemy: "2" }
-        - { session: mypy,    python-version: "3.12",  os: "ubuntu-latest", sqlalchemy: "2" }
-        - { session: deps,    python-version: "3.12",  os: "ubuntu-latest", sqlalchemy: "2" }
+        - { session: tests,   os: "ubuntu-latest", sqlalchemy: "1" }
+        - { session: doctest, os: "ubuntu-latest", sqlalchemy: "2" }
+        - { session: mypy,    os: "ubuntu-latest", sqlalchemy: "2" }
+        - { session: deps,    os: "ubuntu-latest", sqlalchemy: "2" }
 
     steps:
     - uses: actions/checkout@v4
@@ -68,8 +67,9 @@ jobs:
         fetch-depth: 0
 
     - uses: actions/setup-python@v5
+      id: setup-python
       with:
-        python-version: ${{ matrix.python-version }}
+        python-version: ${{ matrix.python-version || '3.x' }}
         allow-prereleases: true
 
     - name: Upgrade pip
@@ -94,6 +94,7 @@ jobs:
 
     - name: Run Nox
       env:
+        NOXFORCEPYTHON: ${{ steps.setup-python.outputs.python-version }}
         SQLALCHEMY_VERSION: ${{ matrix.sqlalchemy }}
         PIP_PRE: "1"
         UV_PRERELEASE: allow
@@ -112,7 +113,6 @@ jobs:
     runs-on: ubuntu-latest
     if: ${{ !github.event.pull_request.head.repo.fork }}
     env:
-      NOXPYTHON: "3.12"
       NOXSESSION: tests
       SAMPLE_TAP_GITLAB_AUTH_TOKEN: ${{ secrets.SAMPLE_TAP_GITLAB_AUTH_TOKEN }}
       SAMPLE_TAP_GITLAB_GROUP_IDS: ${{ secrets.SAMPLE_TAP_GITLAB_GROUP_IDS }}
@@ -125,8 +125,9 @@ jobs:
         fetch-depth: 0
 
     - uses: actions/setup-python@v5
+      id: setup-python
       with:
-        python-version: ${{ env.NOXPYTHON }}
+        python-version: 3.x
 
     - name: Upgrade pip
       env:
@@ -144,6 +145,7 @@ jobs:
 
     - name: Run Nox
       env:
+        NOXFORCEPYTHON: ${{ steps.setup-python.outputs.python-version }}
         PIP_PRE: "1"
         UV_PRERELEASE: allow
       run: |
@@ -159,7 +161,7 @@ jobs:
     - uses: actions/checkout@v4
     - uses: actions/setup-python@v5
       with:
-        python-version: '3.x'
+        python-version: 3.x
 
     - name: Upgrade pip
       env:
diff --git a/noxfile.py b/noxfile.py
index 3a94fe9fa..99f87c9eb 100644
--- a/noxfile.py
+++ b/noxfile.py
@@ -32,7 +32,6 @@
     "3.9",
     "3.8",
 ]
-main_python_version = "3.12"
 locations = "singer_sdk", "tests", "noxfile.py", "docs/conf.py"
 nox.options.sessions = (
     "mypy",
@@ -47,7 +46,7 @@
 typing_dependencies = poetry_config["group"]["typing"]["dependencies"].keys()
 
 
-@nox.session(python=main_python_version)
+@nox.session()
 def mypy(session: nox.Session) -> None:
     """Check types with mypy."""
     args = session.posargs or ["singer_sdk"]
@@ -98,7 +97,7 @@ def tests(session: nox.Session) -> None:
             session.notify("coverage", posargs=[])
 
 
-@nox.session(python=main_python_version)
+@nox.session()
 def benches(session: nox.Session) -> None:
     """Run benchmarks."""
     session.install(".[jwt,s3]")
@@ -114,7 +113,7 @@ def benches(session: nox.Session) -> None:
     )
 
 
-@nox.session(name="deps", python=main_python_version)
+@nox.session(name="deps")
 def dependencies(session: nox.Session) -> None:
     """Check issues with dependencies."""
     session.install(".[s3,testing]")
@@ -122,7 +121,7 @@ def dependencies(session: nox.Session) -> None:
     session.run("deptry", "singer_sdk", *session.posargs)
 
 
-@nox.session(python=main_python_version)
+@nox.session()
 def update_snapshots(session: nox.Session) -> None:
     """Update pytest snapshots."""
     args = session.posargs or ["-m", "snapshot"]
@@ -147,7 +146,7 @@ def doctest(session: nox.Session) -> None:
     session.run("pytest", "--xdoctest", *args)
 
 
-@nox.session(python=main_python_version)
+@nox.session()
 def coverage(session: nox.Session) -> None:
     """Generate coverage report."""
     args = session.posargs or ["report", "-m"]
@@ -160,7 +159,7 @@ def coverage(session: nox.Session) -> None:
     session.run("coverage", *args)
 
 
-@nox.session(name="docs", python=main_python_version)
+@nox.session(name="docs")
 def docs(session: nox.Session) -> None:
     """Build the documentation."""
     args = session.posargs or ["docs", "build", "-W"]
@@ -176,7 +175,7 @@ def docs(session: nox.Session) -> None:
     session.run("sphinx-build", *args)
 
 
-@nox.session(name="docs-serve", python=main_python_version)
+@nox.session(name="docs-serve")
 def docs_serve(session: nox.Session) -> None:
     """Build the documentation."""
     args = session.posargs or [
@@ -199,7 +198,7 @@ def docs_serve(session: nox.Session) -> None:
 
 
 @nox.parametrize("replay_file_path", COOKIECUTTER_REPLAY_FILES)
-@nox.session(python=main_python_version)
+@nox.session()
 def test_cookiecutter(session: nox.Session, replay_file_path: str) -> None:
     """Uses the tap template to build an empty cookiecutter.