diff --git a/pyobas/apis/inject_expectation/inject_expectation.py b/pyobas/apis/inject_expectation/inject_expectation.py
index 54120e9..bbd1288 100644
--- a/pyobas/apis/inject_expectation/inject_expectation.py
+++ b/pyobas/apis/inject_expectation/inject_expectation.py
@@ -105,3 +105,14 @@ def update(
         path = f"{self.path}/{inject_expectation_id}"
         result = self.openbas.http_put(path, post_data=inject_expectation, **kwargs)
         return result
+
+    @exc.on_http_error(exc.OpenBASUpdateError)
+    def bulk_update(
+        self,
+        inject_expectation_input_by_id: Dict[str, Dict[str, Any]],
+        **kwargs: Any,
+    ) -> None:
+        path = f"{self.path}/bulk"
+        self.openbas.http_put(
+            path, post_data={"inputs": inject_expectation_input_by_id}, **kwargs
+        )
diff --git a/pyobas/apis/inject_expectation_trace.py b/pyobas/apis/inject_expectation_trace.py
index ea71166..125fd9c 100644
--- a/pyobas/apis/inject_expectation_trace.py
+++ b/pyobas/apis/inject_expectation_trace.py
@@ -1,3 +1,6 @@
+from typing import Any, Dict, List
+
+from pyobas import exceptions as exc
 from pyobas.base import RESTManager, RESTObject
 from pyobas.mixins import CreateMixin
 from pyobas.utils import RequiredOptional
@@ -19,3 +22,15 @@ class InjectExpectationTraceManager(CreateMixin, RESTManager):
             "inject_expectation_trace_date",
         ),
     )
+
+    @exc.on_http_error(exc.OpenBASUpdateError)
+    def bulk_create(
+        self, payload: Dict[str, List[Dict[str, str]]], **kwargs: Any
+    ) -> dict[str, Any]:
+        path = f"{self.path}/bulk"
+        result = self.openbas.http_post(
+            path,
+            post_data=payload,
+            **kwargs,
+        )
+        return result
diff --git a/pyobas/utils.py b/pyobas/utils.py
index 2f51b82..242ae68 100644
--- a/pyobas/utils.py
+++ b/pyobas/utils.py
@@ -121,7 +121,7 @@ def add_fields(self, log_record, record, message_dict):
         super(CustomJsonFormatter, self).add_fields(log_record, record, message_dict)
         if not log_record.get("timestamp"):
             # This doesn't use record.created, so it is slightly off
-            now = datetime.datetime.utcnow().strftime("%Y-%m-%dT%H:%M:%S.%fZ")
+            now = datetime.datetime.now(datetime.UTC).strftime("%Y-%m-%dT%H:%M:%S.%fZ")
             log_record["timestamp"] = now
         if log_record.get("level"):
             log_record["level"] = log_record["level"].upper()