diff --git a/exorcist/tests/test_taskstatusdb.py b/exorcist/tests/test_taskstatusdb.py
index 5c69650..de4ac8d 100644
--- a/exorcist/tests/test_taskstatusdb.py
+++ b/exorcist/tests/test_taskstatusdb.py
@@ -269,8 +269,110 @@ def test_add_task_network(self, fresh_db, diamond_taskid_network):
         assert len(deps) == len(expected_deps)
 
     def test_task_row_update_statement(self, loaded_db):
-        # TODO: I'm going to do this in a future PR
-        ...
+        expected_sql = (
+            "UPDATE tasks SET status=:status, last_modified=:last_modified "
+            "WHERE tasks.taskid = :taskid_1"
+        )
+
+        with patch_datetime_now():
+            stmt = loaded_db._task_row_update_statement(
+                "foo",
+                TaskStatus.BLOCKED
+            )
+
+        assert str(stmt) == expected_sql
+
+        with loaded_db.engine.begin() as conn:
+            res = conn.execute(stmt)
+
+        assert res.rowcount == 1
+        tasks, deps = get_tasks_and_deps(loaded_db)
+        expected_tasks = {
+            ("foo", TaskStatus.BLOCKED.value, _DEFAULT_DATETIME, 0, 3),
+            ("bar", TaskStatus.BLOCKED.value, None, 0, 3)
+        }
+        assert set(tasks) == expected_tasks
+
+    def test_task_row_update_statement_old_status(self, loaded_db):
+        expected_sql = (
+            "UPDATE tasks SET status=:status, last_modified=:last_modified "
+            "WHERE tasks.taskid = :taskid_1 "
+            "AND tasks.status = :status_1"
+        )
+
+        with patch_datetime_now():
+            stmt = loaded_db._task_row_update_statement(
+                "foo",
+                TaskStatus.IN_PROGRESS,
+                old_status=TaskStatus.AVAILABLE
+            )
+
+        assert str(stmt) == expected_sql
+
+        with loaded_db.engine.begin() as conn:
+            res = conn.execute(stmt)
+
+        assert res.rowcount == 1
+        tasks, deps = get_tasks_and_deps(loaded_db)
+        expected_tasks = {
+            ("foo", TaskStatus.IN_PROGRESS.value, _DEFAULT_DATETIME, 0, 3),
+            ("bar", TaskStatus.BLOCKED.value, None, 0, 3)
+        }
+        assert set(tasks) == expected_tasks
+
+
+    def test_task_row_update_statement_is_checkout(self, loaded_db):
+        expected_sql = (
+            "UPDATE tasks SET status=:status, last_modified=:last_modified, "
+            "tries=(tasks.tries + :tries_1) "
+            "WHERE tasks.taskid = :taskid_1"
+        )
+
+        with patch_datetime_now():
+            stmt = loaded_db._task_row_update_statement(
+                "foo",
+                TaskStatus.IN_PROGRESS,
+                is_checkout=True
+            )
+
+        assert str(stmt) == expected_sql
+
+        with loaded_db.engine.begin() as conn:
+            res = conn.execute(stmt)
+
+        assert res.rowcount == 1
+        tasks, deps = get_tasks_and_deps(loaded_db)
+        expected_tasks = {
+            ("foo", TaskStatus.IN_PROGRESS.value, _DEFAULT_DATETIME, 1, 3),
+            ("bar", TaskStatus.BLOCKED.value, None, 0, 3)
+        }
+        assert set(tasks) == expected_tasks
+
+    def test_task_row_update_statement_max_tries(self, loaded_db):
+        expected_sql = (
+            "UPDATE tasks SET status=:status, last_modified=:last_modified, "
+            "max_tries=:max_tries "
+            "WHERE tasks.taskid = :taskid_1"
+        )
+
+        with patch_datetime_now():
+            stmt = loaded_db._task_row_update_statement(
+                "foo",
+                TaskStatus.AVAILABLE,
+                max_tries=10
+            )
+
+        assert str(stmt) == expected_sql
+
+        with loaded_db.engine.begin() as conn:
+            res = conn.execute(stmt)
+
+        assert res.rowcount == 1
+        tasks, deps = get_tasks_and_deps(loaded_db)
+        expected_tasks = {
+            ("foo", TaskStatus.AVAILABLE.value, _DEFAULT_DATETIME, 1, 10),
+            ("bar", TaskStatus.BLOCKED.value, None, 0, 3)
+        }
 
     def test_check_out_task(self, loaded_db):
         taskid = loaded_db.check_out_task()