diff --git a/api/environments/dynamodb/wrappers/base.py b/api/environments/dynamodb/wrappers/base.py
index 5f0d545be422..9358ee62d4bd 100644
--- a/api/environments/dynamodb/wrappers/base.py
+++ b/api/environments/dynamodb/wrappers/base.py
@@ -1,13 +1,20 @@
 import typing
+from decimal import Context
 from functools import partial
 
 import boto3
+import boto3.dynamodb.types
 from botocore.config import Config
 
 if typing.TYPE_CHECKING:
     from mypy_boto3_dynamodb.service_resource import Table
 
 
+# Avoid `decimal.Rounded` when reading large numbers
+# See https://github.com/boto/boto3/issues/2500
+boto3.dynamodb.types.DYNAMODB_CONTEXT = Context(prec=100)
+
+
 class BaseDynamoWrapper:
     table_name: str = None