diff --git a/server/src/main/java/org/elasticsearch/index/engine/LuceneSyntheticSourceChangesSnapshot.java b/server/src/main/java/org/elasticsearch/index/engine/LuceneSyntheticSourceChangesSnapshot.java
index 3d3d2f6f66d56..f21a3c06ab015 100644
--- a/server/src/main/java/org/elasticsearch/index/engine/LuceneSyntheticSourceChangesSnapshot.java
+++ b/server/src/main/java/org/elasticsearch/index/engine/LuceneSyntheticSourceChangesSnapshot.java
@@ -80,7 +80,7 @@ public LuceneSyntheticSourceChangesSnapshot(
         assert mappingLookup.isSourceSynthetic();
         // ensure we can buffer at least one document
         this.maxMemorySizeInBytes = maxMemorySizeInBytes > 0 ? maxMemorySizeInBytes : 1;
-        this.sourceLoader = mappingLookup.newSourceLoader(SourceFieldMetrics.NOOP);
+        this.sourceLoader = mappingLookup.newSourceLoader(null, SourceFieldMetrics.NOOP);
         Set<String> storedFields = sourceLoader.requiredStoredFields();
         assert mappingLookup.isSourceSynthetic() : "synthetic source must be enabled for proper functionality.";
         this.storedFieldLoader = StoredFieldLoader.create(false, storedFields);
diff --git a/server/src/test/java/org/elasticsearch/index/mapper/TextFieldMapperTests.java b/server/src/test/java/org/elasticsearch/index/mapper/TextFieldMapperTests.java
index 7f9474f5bab83..32cbcfc2441a1 100644
--- a/server/src/test/java/org/elasticsearch/index/mapper/TextFieldMapperTests.java
+++ b/server/src/test/java/org/elasticsearch/index/mapper/TextFieldMapperTests.java
@@ -1354,7 +1354,7 @@ private void testBlockLoaderFromParent(boolean columnReader, boolean syntheticSo
         XContentBuilder mapping = mapping(buildFields);
         MapperService mapper = syntheticSource ? createSytheticSourceMapperService(mapping) : createMapperService(mapping);
         BlockReaderSupport blockReaderSupport = getSupportedReaders(mapper, "field.sub");
-        var sourceLoader = mapper.mappingLookup().newSourceLoader(SourceFieldMetrics.NOOP);
+        var sourceLoader = mapper.mappingLookup().newSourceLoader(null, SourceFieldMetrics.NOOP);
         testBlockLoader(columnReader, example, blockReaderSupport, sourceLoader);
     }
 }
diff --git a/test/framework/src/main/java/org/elasticsearch/index/mapper/MapperTestCase.java b/test/framework/src/main/java/org/elasticsearch/index/mapper/MapperTestCase.java
index 4128fe45364e3..2da2c5a08c177 100644
--- a/test/framework/src/main/java/org/elasticsearch/index/mapper/MapperTestCase.java
+++ b/test/framework/src/main/java/org/elasticsearch/index/mapper/MapperTestCase.java
@@ -1483,7 +1483,7 @@ private void testBlockLoader(boolean syntheticSource, boolean columnReader) thro
                 blockReaderSupport.syntheticSource
             );
         }
-        var sourceLoader = mapper.mappingLookup().newSourceLoader(SourceFieldMetrics.NOOP);
+        var sourceLoader = mapper.mappingLookup().newSourceLoader(null, SourceFieldMetrics.NOOP);
         testBlockLoader(columnReader, example, blockReaderSupport, sourceLoader);
     }