diff --git a/pkg/pip_requirements.txt b/pkg/pip_requirements.txt
index 165f17c..15b749d 100644
--- a/pkg/pip_requirements.txt
+++ b/pkg/pip_requirements.txt
@@ -1,2 +1,2 @@
 spaceone-api
-boto3
\ No newline at end of file
+boto3==1.35.76
\ No newline at end of file
diff --git a/src/plugin/manager/ec2/snapshot_manager.py b/src/plugin/manager/ec2/snapshot_manager.py
index d7ce8b4..8cf137b 100644
--- a/src/plugin/manager/ec2/snapshot_manager.py
+++ b/src/plugin/manager/ec2/snapshot_manager.py
@@ -136,5 +136,6 @@ def _update_times(self, snapshot_info: dict) -> None:
         snapshot_info.update(
             {
                 "StartTime": self.datetime_to_iso8601(snapshot_info.get("StartTime")),
+                "CompletionTime": self.datetime_to_iso8601(snapshot_info.get("CompletionTime")),
             }
         )