diff --git a/noxfile.py b/noxfile.py
index 5edcd37..8dd5c9b 100644
--- a/noxfile.py
+++ b/noxfile.py
@@ -29,7 +29,9 @@ def format(session):
 
 @nox.session
 def lint(session):
-    session.install("black", "isort", "flake8", "mypy", "types-certifi", "tomli")
+    session.install(
+        "black", "isort", "flake8", "mypy", "types-certifi", "tomli", "urllib3"
+    )
     session.run("flake8", "--ignore=E501,W503", *SOURCE_PATHS)
     session.run("black", "--check", *SOURCE_PATHS)
     session.run("isort", "--check", "--profile=black", *SOURCE_PATHS)
diff --git a/src/truststore/_api.py b/src/truststore/_api.py
index 718e6c0..579ff40 100644
--- a/src/truststore/_api.py
+++ b/src/truststore/_api.py
@@ -49,7 +49,7 @@ def extract_from_ssl() -> None:
     try:
         import urllib3.util.ssl_ as urllib3_ssl
 
-        urllib3_ssl.SSLContext = _original_SSLContext
+        urllib3_ssl.SSLContext = _original_SSLContext  # type: ignore[assignment]
     except ImportError:
         pass