diff --git a/docs/CreateRepoOption.md b/docs/CreateRepoOption.md
index 980db76..669e445 100644
--- a/docs/CreateRepoOption.md
+++ b/docs/CreateRepoOption.md
@@ -10,7 +10,7 @@ Name | Type | Description | Notes
 **issueLabels** | **String** | Label-Set to use |  [optional]
 **license** | **String** | License to use |  [optional]
 **name** | **String** | Name of the repository to create | 
-**objectFormatName** | [**ObjectFormatNameEnum**](#ObjectFormatNameEnum) | ObjectFormatName of the underlying git repository |  [optional]
+**objectFormatName** | [**ObjectFormatNameEnum**](#ObjectFormatNameEnum) | ObjectFormatName of the underlying git repository, empty string for default (sha1) |  [optional]
 **_private** | **Boolean** | Whether the repository is private |  [optional]
 **readme** | **String** | Readme of the repository to create |  [optional]
 **template** | **Boolean** | Whether the repository is template |  [optional]
diff --git a/src/main/java/org/gitnex/tea4j/v2/models/CreateRepoOption.java b/src/main/java/org/gitnex/tea4j/v2/models/CreateRepoOption.java
index eb420fc..5fb2532 100644
--- a/src/main/java/org/gitnex/tea4j/v2/models/CreateRepoOption.java
+++ b/src/main/java/org/gitnex/tea4j/v2/models/CreateRepoOption.java
@@ -48,7 +48,7 @@ public class CreateRepoOption implements Serializable {
   @SerializedName("name")
   private String name = null;
 
-  /** ObjectFormatName of the underlying git repository */
+  /** ObjectFormatName of the underlying git repository, empty string for default (sha1) */
   @JsonAdapter(ObjectFormatNameEnum.Adapter.class)
   public enum ObjectFormatNameEnum {
     SHA1("sha1"),
@@ -294,11 +294,13 @@ public class CreateRepoOption implements Serializable {
   }
 
   /**
-   * ObjectFormatName of the underlying git repository
+   * ObjectFormatName of the underlying git repository, empty string for default (sha1)
    *
    * @return objectFormatName
    */
-  @Schema(description = "ObjectFormatName of the underlying git repository")
+  @Schema(
+      description =
+          "ObjectFormatName of the underlying git repository, empty string for default (sha1)")
   public ObjectFormatNameEnum getObjectFormatName() {
     return objectFormatName;
   }