diff --git a/google/__init__.py b/google/__init__.py
index 8fcc60e2b..8e60d8439 100644
--- a/google/__init__.py
+++ b/google/__init__.py
@@ -21,4 +21,4 @@
 except ImportError:
     import pkgutil
 
-    __path__ = pkgutil.extend_path(__path__, __name__)
+    __path__ = pkgutil.extend_path(__path__, __name__)  # type: ignore
diff --git a/google/cloud/bigquery/opentelemetry_tracing.py b/google/cloud/bigquery/opentelemetry_tracing.py
index 2345fd1bb..3d0a66ba8 100644
--- a/google/cloud/bigquery/opentelemetry_tracing.py
+++ b/google/cloud/bigquery/opentelemetry_tracing.py
@@ -18,9 +18,9 @@
 
 logger = logging.getLogger(__name__)
 try:
-    from opentelemetry import trace
-    from opentelemetry.instrumentation.utils import http_status_to_status_code
-    from opentelemetry.trace.status import Status
+    from opentelemetry import trace  # type: ignore
+    from opentelemetry.instrumentation.utils import http_status_to_status_code  # type: ignore
+    from opentelemetry.trace.status import Status  # type: ignore
 
     HAS_OPENTELEMETRY = True
     _warned_telemetry = True
diff --git a/noxfile.py b/noxfile.py
index a91e60a5f..139093acc 100644
--- a/noxfile.py
+++ b/noxfile.py
@@ -200,12 +200,22 @@ def mypy_samples(session):
     """Run type checks with mypy."""
     session.install("-e", ".[all]")
 
-    session.install("ipython", "pytest")
+    session.install("pytest")
+    for requirements_path in CURRENT_DIRECTORY.glob("samples/*/requirements.txt"):
+        session.install("-r", requirements_path)
     session.install(MYPY_VERSION)
 
     # Just install the dependencies' type info directly, since "mypy --install-types"
     # might require an additional pass.
-    session.install("types-mock", "types-pytz")
+    session.install(
+        "types-mock",
+        "types-pytz",
+        "types-protobuf",
+        "types-python-dateutil",
+        "types-requests",
+        "types-setuptools",
+    )
+
     session.install("typing-extensions")  # for TypedDict in pre-3.8 Python versions
 
     session.run(
diff --git a/samples/mypy.ini b/samples/mypy.ini
index 29757e47d..3f7eb6647 100644
--- a/samples/mypy.ini
+++ b/samples/mypy.ini
@@ -2,7 +2,6 @@
 # Should match DEFAULT_PYTHON_VERSION from root noxfile.py
 python_version = 3.8
 exclude = noxfile\.py
-strict = True
 warn_unused_configs = True
 
 [mypy-google.auth,google.oauth2,geojson,google_auth_oauthlib,IPython.*]