diff --git a/docs/conf.py b/docs/conf.py
index ad534385..620d2a06 100644
--- a/docs/conf.py
+++ b/docs/conf.py
@@ -113,7 +113,6 @@
     "**/.nox/**/*",
     "samples/AUTHORING_GUIDE.md",
     "samples/CONTRIBUTING.md",
-    "samples/snippets/README.md",
     "samples/snippets/README.rst",
 ]
 
diff --git a/noxfile.py b/noxfile.py
index eeacb636..0b1c0f6c 100644
--- a/noxfile.py
+++ b/noxfile.py
@@ -30,7 +30,7 @@
 DEFAULT_PYTHON_VERSION = "3.8"
 
 # We're using two Python versions to test with sqlalchemy 1.3 and 1.4.
-SYSTEM_TEST_PYTHON_VERSIONS = ["3.8", "3.9", "3.10"]
+SYSTEM_TEST_PYTHON_VERSIONS = ["3.8", "3.10"]
 UNIT_TEST_PYTHON_VERSIONS = ["3.6", "3.7", "3.8", "3.9", "3.10"]
 
 CURRENT_DIRECTORY = pathlib.Path(__file__).parent.absolute()
@@ -100,7 +100,7 @@ def default(session):
 
     if session.python == "3.8":
         extras = "[tests,alembic]"
-    elif session.python in {"3.9", "3.10"}:
+    elif session.python == "3.10":
         extras = "[tests,geography]"
     else:
         extras = "[tests]"
@@ -158,7 +158,7 @@ def system(session):
     session.install("mock", "pytest", "google-cloud-testutils", "-c", constraints_path)
     if session.python == "3.8":
         extras = "[tests,alembic]"
-    elif session.python == "3.9":
+    elif session.python == "3.10":
         extras = "[tests,geography]"
     else:
         extras = "[tests]"
diff --git a/owlbot.py b/owlbot.py
index ef519a92..c007d936 100644
--- a/owlbot.py
+++ b/owlbot.py
@@ -30,12 +30,11 @@
 extras = ["tests"]
 extras_by_python = {
     "3.8": ["tests", "alembic"],
-    "3.9": ["tests", "geography"],
     "3.10": ["tests", "geography"],
 }
 templated_files = common.py_library(
     unit_test_python_versions=["3.6", "3.7", "3.8", "3.9", "3.10"],
-    system_test_python_versions=["3.8", "3.9", "3.10"],
+    system_test_python_versions=["3.8", "3.10"],
     cov_level=100,
     unit_test_extras=extras,
     unit_test_extras_by_python=extras_by_python,
@@ -137,7 +136,7 @@ def compliance(session):
     )
     if session.python == "3.8":
         extras = "[tests,alembic]"
-    elif session.python in {"3.9", "3.10"}:
+    elif session.python == "3.10":
         extras = "[tests,geography]"
     else:
         extras = "[tests]"
diff --git a/samples/snippets/README.md b/samples/snippets/README.md
deleted file mode 100644
index 0d2530cc..00000000
--- a/samples/snippets/README.md
+++ /dev/null
@@ -1,35 +0,0 @@
-## Info regarding requirements{,-test}.{in,txt}
-
-`requirements.in` is generated by running the following command in this
-directory:
-
-```bash
-(cd ../../ \
-	&& python setup.py egg_info 1>&2 && \
-	cat sqlalchemy_bigquery.egg-info/requires.txt \
-	| egrep -v -e '^\[' -e '^\s*$') | tee requirements.in
-```
-
-This results in a requirements.in file that contains all direct dependencies of
-this project with correct version ranges.
-
-`requirements-test.in` is hand crtetafted.
-
-`requirements.in` and `requirements-test.in` are made for processing with
-[pip-compile](https://github.com/jazzband/pip-tools).
-
-To generate `requirements{,-test}.txt` from `requirements{,-test}.in` run the
-following commands in this directory:
-
-```bash
-pipx run --spec pip-tools --python python3.6 \
-    pip-compile --output-file=requirements.txt \
-    requirements.in
-pipx run --spec pip-tools --python python3.6 \
-    pip-compile --output-file=requirements-test.txt \
-    requirements-test.in
-```
-
-**IMPORTANT**: python 3.6 is used as this is the lowest version of python
-supported and if a newer version of python is used instead the
-`requirements{,-test}.txt` will not work for python 3.6.
diff --git a/samples/snippets/README.rst b/samples/snippets/README.rst
new file mode 100644
index 00000000..b98e34ff
--- /dev/null
+++ b/samples/snippets/README.rst
@@ -0,0 +1,37 @@
+Info regarding ``requirements{,-test}.{in,txt}``
+================================================
+
+``requirements.in`` is generated by running the following command in
+this directory:
+
+.. code:: bash
+
+   (cd ../../ \
+       && python setup.py egg_info 1>&2 && \
+       cat sqlalchemy_bigquery.egg-info/requires.txt \
+       | egrep -v -e '^\[' -e '^\s*$') | tee requirements.in
+
+This results in a requirements.in file that contains all direct
+dependencies of this project with correct version ranges.
+
+``requirements-test.in`` is hand crafted.
+
+``requirements.in`` and ``requirements-test.in`` are made for processing
+with `pip-compile <https://github.com/jazzband/pip-tools>`__.
+
+To generate ``requirements{,-test}.txt`` from
+``requirements{,-test}.in`` run the following commands in this
+directory:
+
+.. code:: bash
+
+   pipx run --spec pip-tools --python python3.6 \
+       pip-compile --output-file=requirements.txt \
+       requirements.in
+   pipx run --spec pip-tools --python python3.6 \
+       pip-compile --output-file=requirements-test.txt \
+       requirements-test.in
+
+.. important:: python 3.6 is used as this is the lowest version of
+   python supported and if a newer version of python is used instead the
+   ``requirements{,-test}.txt`` will not work for python 3.6.