diff --git a/infrastructure/json/src/main/java/tech/pegasys/teku/infrastructure/json/JsonUtil.java b/infrastructure/json/src/main/java/tech/pegasys/teku/infrastructure/json/JsonUtil.java
index da74e68f02e..6c460689a08 100644
--- a/infrastructure/json/src/main/java/tech/pegasys/teku/infrastructure/json/JsonUtil.java
+++ b/infrastructure/json/src/main/java/tech/pegasys/teku/infrastructure/json/JsonUtil.java
@@ -155,7 +155,7 @@ private static <T> Optional<T> getAttributeFromParser(
     while (!parser.isClosed()) {
       final JsonToken jsonToken = parser.nextToken();
       if (JsonToken.FIELD_NAME.equals(jsonToken)) {
-        final String currentFieldName = parser.getCurrentName();
+        final String currentFieldName = parser.currentName();
         if (currentFieldName.equals(fieldName)) {
           if (path.length == i + 1) {
             parser.nextToken();
diff --git a/infrastructure/json/src/main/java/tech/pegasys/teku/infrastructure/json/types/DeserializableMapTypeDefinition.java b/infrastructure/json/src/main/java/tech/pegasys/teku/infrastructure/json/types/DeserializableMapTypeDefinition.java
index 125fbd87537..d9899f79bb4 100644
--- a/infrastructure/json/src/main/java/tech/pegasys/teku/infrastructure/json/types/DeserializableMapTypeDefinition.java
+++ b/infrastructure/json/src/main/java/tech/pegasys/teku/infrastructure/json/types/DeserializableMapTypeDefinition.java
@@ -61,7 +61,7 @@ public Map<TKey, TValue> deserialize(final JsonParser p) throws IOException {
       t = p.nextToken();
     }
     for (; t == JsonToken.FIELD_NAME; t = p.nextToken()) {
-      final String fieldName = p.getCurrentName();
+      final String fieldName = p.currentName();
       p.nextToken();
       final TValue fieldValue = valueType.deserialize(p);
       result.put(keyType.deserializeFromString(fieldName), fieldValue);
diff --git a/infrastructure/json/src/main/java/tech/pegasys/teku/infrastructure/json/types/DeserializableObjectTypeDefinition.java b/infrastructure/json/src/main/java/tech/pegasys/teku/infrastructure/json/types/DeserializableObjectTypeDefinition.java
index 0805cefba27..4c9f1e59986 100644
--- a/infrastructure/json/src/main/java/tech/pegasys/teku/infrastructure/json/types/DeserializableObjectTypeDefinition.java
+++ b/infrastructure/json/src/main/java/tech/pegasys/teku/infrastructure/json/types/DeserializableObjectTypeDefinition.java
@@ -66,7 +66,7 @@ public TObject deserialize(final JsonParser p) throws IOException {
     }
     final Set<String> presentFields = new HashSet<>();
     for (; t == JsonToken.FIELD_NAME; t = p.nextToken()) {
-      String fieldName = p.getCurrentName();
+      String fieldName = p.currentName();
       p.nextToken();
       final DeserializableFieldDefinition<TObject, TBuilder> fieldDefinition =
           deserializableFields.get(fieldName);