diff --git a/data-prepper-core/src/main/java/org/opensearch/dataprepper/plugin/ObjectMapperConfiguration.java b/data-prepper-core/src/main/java/org/opensearch/dataprepper/plugin/ObjectMapperConfiguration.java
index 6802ae144c..e905d640f7 100644
--- a/data-prepper-core/src/main/java/org/opensearch/dataprepper/plugin/ObjectMapperConfiguration.java
+++ b/data-prepper-core/src/main/java/org/opensearch/dataprepper/plugin/ObjectMapperConfiguration.java
@@ -30,6 +30,7 @@ public class ObjectMapperConfiguration {
     ObjectMapper extensionPluginConfigObjectMapper() {
         final SimpleModule simpleModule = new SimpleModule();
         simpleModule.addDeserializer(Duration.class, new DataPrepperDurationDeserializer());
+        simpleModule.addDeserializer(ByteCount.class, new ByteCountDeserializer());
 
         return new ObjectMapper()
                 .setPropertyNamingStrategy(PropertyNamingStrategies.SNAKE_CASE)