diff --git a/.release.json b/.release.json
index 187acb19..88f5c833 100644
--- a/.release.json
+++ b/.release.json
@@ -1,8 +1,8 @@
 {
   "source": {
     "repo_url": "https://github.com/onfido/onfido-openapi-spec",
-    "short_sha": "5e1a0b3",
-    "long_sha": "5e1a0b371b070316fd6b1b7d6fa60e2056047e00",
+    "short_sha": "e065d82",
+    "long_sha": "e065d8212494e0a91ad5053d612a7ab9f134a8af",
     "version": "v5.7.0"
   },
   "release": "v6.7.0"
diff --git a/src/main/java/com/onfido/model/Passkey.java b/src/main/java/com/onfido/model/Passkey.java
index 9d0c3abd..c44b66e0 100644
--- a/src/main/java/com/onfido/model/Passkey.java
+++ b/src/main/java/com/onfido/model/Passkey.java
@@ -125,7 +125,7 @@ public static void validateJsonElement(JsonElement jsonElement) throws IOExcepti
   @javax.annotation.Nonnull
   private OffsetDateTime createdAt;
 
-  public static final String SERIALIZED_NAME_LAST_USED_AT = "lastUsedAt";
+  public static final String SERIALIZED_NAME_LAST_USED_AT = "last_used_at";
   @SerializedName(SERIALIZED_NAME_LAST_USED_AT)
   @javax.annotation.Nullable
   private OffsetDateTime lastUsedAt;
@@ -331,7 +331,7 @@ private String toIndentedString(Object o) {
     openapiFields.add("application_domain");
     openapiFields.add("state");
     openapiFields.add("created_at");
-    openapiFields.add("lastUsedAt");
+    openapiFields.add("last_used_at");
 
     // a set of required properties/fields (JSON key names)
     openapiRequiredFields = new HashSet<String>();