diff --git a/pyproject.toml b/pyproject.toml
index ab37a348..3e22b5f0 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -333,7 +333,7 @@ packages = ["duckdb", "_duckdb"]
 strict = true
 warn_unreachable = true
 pretty = true
-python_version = "3.10"
+python_version = "3.12"
 exclude = [
     "duckdb/experimental/", # not checking the pyspark API
     "duckdb/query_graph/",  # old and unmaintained (should probably remove)
diff --git a/tests/fast/test_all_types.py b/tests/fast/test_all_types.py
index 07dc5f70..6012b983 100644
--- a/tests/fast/test_all_types.py
+++ b/tests/fast/test_all_types.py
@@ -377,9 +377,9 @@ def test_fetchnumpy(self, cur_type):
             ),
             "interval": np.ma.array(
                 [
-                    np.timedelta64(0),
-                    np.timedelta64(2675722599999999000),
-                    np.timedelta64(42),
+                    np.timedelta64(0, "ns"),
+                    np.timedelta64(2675722599999999000, "ns"),
+                    np.timedelta64(42, "ns"),
                 ],
                 mask=[0, 0, 1],
             ),
@@ -387,7 +387,7 @@ def test_fetchnumpy(self, cur_type):
             # such that the conversion yields "Not a Time"
             "timestamp_ns": np.ma.array(
                 [
-                    np.datetime64("NaT"),
+                    np.datetime64("NaT", "ns"),
                     np.datetime64(9223372036854775806, "ns"),
                     np.datetime64("1990-01-01T00:42"),
                 ],