diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index 4d464b11..4d13935e 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -57,7 +57,7 @@ repos:
   #  additional_dependencies: [flake8-bugbear]
 
 - repo: https://github.com/pre-commit/mirrors-mypy
-  rev: 'v0.910'  # Use the sha / tag you want to point at
+  rev: 'v1.9.0'  # Use the sha / tag you want to point at
   hooks:
   - id: mypy
     exclude: ^templates/
diff --git a/CHANGELOG.rst b/CHANGELOG.rst
index d20bbf64..35d526d6 100644
--- a/CHANGELOG.rst
+++ b/CHANGELOG.rst
@@ -5,6 +5,8 @@ Changelog
 Next
 ====
 
+- Fix OAuth2 flow in GSheets (#438)
+
 Version 1.2.17 - 2024-02-23
 ===========================
 
diff --git a/setup.cfg b/setup.cfg
index af8c68b2..cbe65e45 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -134,6 +134,7 @@ githubapi =
     python-jsonpath>=0.10.3
 gsheetsapi =
     google-auth>=1.23.0
+    pyopenssl>=24.0.0
 holidaysmemory =
     holidays>=0.23
 htmltableapi =
diff --git a/src/shillelagh/adapters/api/gsheets/adapter.py b/src/shillelagh/adapters/api/gsheets/adapter.py
index d2fafad3..3e45d74d 100644
--- a/src/shillelagh/adapters/api/gsheets/adapter.py
+++ b/src/shillelagh/adapters/api/gsheets/adapter.py
@@ -251,8 +251,11 @@ def _run_query(self, sql: str) -> QueryResults:
         if response.encoding is None:
             response.encoding = "utf-8"
 
-        if response.status_code != 200:
-            raise ProgrammingError(response.text)
+        try:
+            response.raise_for_status()
+        except Exception as ex:
+            self._check_permissions(ex)
+            raise ProgrammingError(response.text) from ex
 
         if response.text.startswith(JSON_PAYLOAD_PREFIX):
             result = json.loads(response.text[len(JSON_PAYLOAD_PREFIX) :])
diff --git a/src/shillelagh/adapters/api/gsheets/lib.py b/src/shillelagh/adapters/api/gsheets/lib.py
index 4ec1c6ce..5a50ebf2 100644
--- a/src/shillelagh/adapters/api/gsheets/lib.py
+++ b/src/shillelagh/adapters/api/gsheets/lib.py
@@ -187,11 +187,11 @@ def get_index_from_letters(letters: str) -> int:
 
     """
     base26 = reversed([string.ascii_uppercase.index(letter) + 1 for letter in letters])
-    return (
+    return int(
         sum(
             value * (len(string.ascii_uppercase) ** i) for i, value in enumerate(base26)
         )
-        - 1
+        - 1,
     )
 
 
diff --git a/src/shillelagh/backends/apsw/dialects/gsheets.py b/src/shillelagh/backends/apsw/dialects/gsheets.py
index 2dfef2d4..fa7e0a63 100644
--- a/src/shillelagh/backends/apsw/dialects/gsheets.py
+++ b/src/shillelagh/backends/apsw/dialects/gsheets.py
@@ -146,7 +146,7 @@ def do_ping(self, dbapi_connection: _ConnectionFairy) -> bool:
     def get_table_names(  # pylint: disable=unused-argument
         self,
         connection: _ConnectionFairy,
-        schema: str = None,
+        schema: Optional[str] = None,
         sqlite_include_internal: bool = False,
         **kwargs: Any,
     ) -> List[str]:
diff --git a/tests/adapters/api/gsheets/adapter_test.py b/tests/adapters/api/gsheets/adapter_test.py
index e74c2752..9e05df5e 100644
--- a/tests/adapters/api/gsheets/adapter_test.py
+++ b/tests/adapters/api/gsheets/adapter_test.py
@@ -752,6 +752,11 @@ def test_api_bugs(mocker: MockerFixture) -> None:
         status_code=400,
         headers={},
     )
+    adapter.register_uri(
+        "GET",
+        "https://sheets.googleapis.com/v4/spreadsheets/3/developerMetadata/0",
+        status_code=200,
+    )
 
     connection = connect(":memory:", ["gsheetsapi"])
     cursor = connection.cursor()