diff --git a/google/cloud/aiplatform/v1beta1/explanation.proto b/google/cloud/aiplatform/v1beta1/explanation.proto
index 6a0e8bfab..1801a5021 100644
--- a/google/cloud/aiplatform/v1beta1/explanation.proto
+++ b/google/cloud/aiplatform/v1beta1/explanation.proto
@@ -425,6 +425,30 @@ message BlurBaselineConfig {
 // Example-based explainability that returns the nearest neighbors from the
 // provided dataset.
 message Examples {
+  // The Cloud Storage input instances.
+  message ExampleGcsSource {
+    // The format of the input example instances.
+    enum DataFormat {
+      // Format unspecified, used when unset.
+      DATA_FORMAT_UNSPECIFIED = 0;
+
+      // Examples are stored in JSONL files.
+      JSONL = 1;
+    }
+
+    // The format in which instances are given, if not specified, assume it's
+    // JSONL format. Currently only JSONL format is supported.
+    DataFormat data_format = 1;
+
+    // The Cloud Storage location for the input instances.
+    GcsSource gcs_source = 2;
+  }
+
+  oneof source {
+    // The Cloud Storage input instances.
+    ExampleGcsSource example_gcs_source = 5;
+  }
+
   oneof config {
     // The full configuration for the generated index, the semantics are the
     // same as [metadata][google.cloud.aiplatform.v1beta1.Index.metadata] and