diff --git a/config/clients/java/template/OpenFgaApiIntegrationTest.java.mustache b/config/clients/java/template/OpenFgaApiIntegrationTest.java.mustache
index 30c8b1ea..c6235270 100644
--- a/config/clients/java/template/OpenFgaApiIntegrationTest.java.mustache
+++ b/config/clients/java/template/OpenFgaApiIntegrationTest.java.mustache
@@ -305,7 +305,7 @@ public class OpenFgaApiIntegrationTest {
         // Then
         String responseJson = mapper.writeValueAsString(response.getAssertions());
         assertEquals(
-                "[{\"tuple_key\":{\"object\":\"document:2021-budget\",\"relation\":\"reader\",\"user\":\"user:81684243-9356-4421-8fbf-a4f8d36aa31b\"},\"expectation\":true}]",
+                "[{\"tuple_key\":{\"object\":\"document:2021-budget\",\"relation\":\"reader\",\"user\":\"user:81684243-9356-4421-8fbf-a4f8d36aa31b\"},\"expectation\":true,\"contextual_tuples\":null}]",
                 responseJson);
     }
 
diff --git a/config/clients/java/template/OpenFgaApiTest.java.mustache b/config/clients/java/template/OpenFgaApiTest.java.mustache
index 07540d04..7b5b3184 100644
--- a/config/clients/java/template/OpenFgaApiTest.java.mustache
+++ b/config/clients/java/template/OpenFgaApiTest.java.mustache
@@ -1773,7 +1773,7 @@ public class OpenFgaApiTest {
         // Given
         String putUrl = "https://api.fga.example/stores/01YCP46JKYM8FJCQ37NMBYHE5X/assertions/01G5JAVJ41T49E9TT3SKVS7X1J";
         String expectedBody = String.format(
-                "{\"assertions\":[{\"tuple_key\":{\"object\":\"%s\",\"relation\":\"%s\",\"user\":\"%s\"},\"expectation\":true}]}",
+                "{\"assertions\":[{\"tuple_key\":{\"object\":\"%s\",\"relation\":\"%s\",\"user\":\"%s\"},\"expectation\":true,\"contextual_tuples\":null}]}",
                 DEFAULT_OBJECT, DEFAULT_RELATION, DEFAULT_USER);
         mockHttpClient.onPut(putUrl).withBody(is(expectedBody)).doReturn(200, EMPTY_RESPONSE_BODY);
         WriteAssertionsRequest request = new WriteAssertionsRequest()
diff --git a/config/clients/java/template/client-OpenFgaClientIntegrationTest.java.mustache b/config/clients/java/template/client-OpenFgaClientIntegrationTest.java.mustache
index a72b4e51..2cbbccb8 100644
--- a/config/clients/java/template/client-OpenFgaClientIntegrationTest.java.mustache
+++ b/config/clients/java/template/client-OpenFgaClientIntegrationTest.java.mustache
@@ -320,7 +320,7 @@ public class OpenFgaClientIntegrationTest {
         // Then
         String responseJson = mapper.writeValueAsString(response.getAssertions());
         assertEquals(
-                "[{\"tuple_key\":{\"object\":\"document:2021-budget\",\"relation\":\"reader\",\"user\":\"user:81684243-9356-4421-8fbf-a4f8d36aa31b\"},\"expectation\":true}]",
+                "[{\"tuple_key\":{\"object\":\"document:2021-budget\",\"relation\":\"reader\",\"user\":\"user:81684243-9356-4421-8fbf-a4f8d36aa31b\"},\"expectation\":true,\"contextual_tuples\":null}]",
                 responseJson);
     }
 
diff --git a/config/clients/java/template/client-OpenFgaClientTest.java.mustache b/config/clients/java/template/client-OpenFgaClientTest.java.mustache
index 9a272602..13d256c1 100644
--- a/config/clients/java/template/client-OpenFgaClientTest.java.mustache
+++ b/config/clients/java/template/client-OpenFgaClientTest.java.mustache
@@ -2490,7 +2490,7 @@ public class OpenFgaClientTest {
         String putUrl =
                 String.format("https://api.fga.example/stores/%s/assertions/%s", DEFAULT_STORE_ID, DEFAULT_AUTH_MODEL_ID);
         String expectedBody = String.format(
-                "{\"assertions\":[{\"tuple_key\":{\"object\":\"%s\",\"relation\":\"%s\",\"user\":\"%s\"},\"expectation\":true}]}",
+                "{\"assertions\":[{\"tuple_key\":{\"object\":\"%s\",\"relation\":\"%s\",\"user\":\"%s\"},\"expectation\":true,\"contextual_tuples\":null}]}",
                 DEFAULT_OBJECT, DEFAULT_RELATION, DEFAULT_USER);
         mockHttpClient.onPut(putUrl).withBody(is(expectedBody)).doReturn(200, EMPTY_RESPONSE_BODY);
         List<ClientAssertion> assertions = List.of(new ClientAssertion()