diff --git a/test/asynchronous/test_transactions.py b/test/asynchronous/test_transactions.py
index 53eb4df6f7..2542da2faa 100644
--- a/test/asynchronous/test_transactions.py
+++ b/test/asynchronous/test_transactions.py
@@ -46,10 +46,10 @@
     CollectionInvalid,
     ConfigurationError,
     ConnectionFailure,
-    ExecutionTimeout,
     InvalidOperation,
     NetworkTimeout,
     OperationFailure,
+    PyMongoError,
 )
 from pymongo.operations import IndexModel, InsertOne
 from pymongo.read_concern import ReadConcern
@@ -608,8 +608,13 @@ async def callback(session):
         listener.reset()
         async with client.start_session() as s:
             with pymongo.timeout(1.0):
-                with self.assertRaises(ExecutionTimeout):
+                # The server may report MaxTimeMSExpired as an
+                # ExecutionTimeout or a WriteError.
+                # The driver can also time out with a NetworkTimeout while waiting for a response,
+                # so only assert that the error is a CSOT timeout.
+                with self.assertRaises(PyMongoError) as ctx:
                     await s.with_transaction(callback)
+                self.assertTrue(ctx.exception.timeout)
 
         # At least two attempts: the original and one or more retries.
         inserts = len([x for x in listener.started_command_names() if x == "insert"])
diff --git a/test/test_transactions.py b/test/test_transactions.py
index acfe3d764a..c1a55af8ed 100644
--- a/test/test_transactions.py
+++ b/test/test_transactions.py
@@ -41,10 +41,10 @@
     CollectionInvalid,
     ConfigurationError,
     ConnectionFailure,
-    ExecutionTimeout,
     InvalidOperation,
     NetworkTimeout,
     OperationFailure,
+    PyMongoError,
 )
 from pymongo.operations import IndexModel, InsertOne
 from pymongo.read_concern import ReadConcern
@@ -596,8 +596,13 @@ def callback(session):
         listener.reset()
         with client.start_session() as s:
             with pymongo.timeout(1.0):
-                with self.assertRaises(ExecutionTimeout):
+                # The server may report MaxTimeMSExpired as an
+                # ExecutionTimeout or a WriteError.
+                # The driver can also time out with a NetworkTimeout while waiting for a response,
+                # so only assert that the error is a CSOT timeout.
+                with self.assertRaises(PyMongoError) as ctx:
                     s.with_transaction(callback)
+                self.assertTrue(ctx.exception.timeout)
 
         # At least two attempts: the original and one or more retries.
         inserts = len([x for x in listener.started_command_names() if x == "insert"])