diff --git a/spring-batch-core/src/main/java/org/springframework/batch/core/repository/dao/Jackson2ExecutionContextStringSerializer.java b/spring-batch-core/src/main/java/org/springframework/batch/core/repository/dao/Jackson2ExecutionContextStringSerializer.java
index d70ff646c..f20136f42 100644
--- a/spring-batch-core/src/main/java/org/springframework/batch/core/repository/dao/Jackson2ExecutionContextStringSerializer.java
+++ b/spring-batch-core/src/main/java/org/springframework/batch/core/repository/dao/Jackson2ExecutionContextStringSerializer.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2008-2018 the original author or authors.
+ * Copyright 2008-2019 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -61,7 +61,8 @@ public class Jackson2ExecutionContextStringSerializer implements ExecutionContex
 
     public void setObjectMapper(ObjectMapper objectMapper) {
         Assert.notNull(objectMapper, "ObjectMapper must not be null");
-        this.objectMapper = objectMapper;
+        this.objectMapper = objectMapper.copy();
+        this.objectMapper.registerModule(new JobParametersModule());
     }
 
     public Map<String, Object> deserialize(InputStream in) throws IOException {