diff --git a/rest-api-spec/src/yamlRestTest/resources/rest-api-spec/test/search.vectors/130_knn_query_nested_search.yml b/rest-api-spec/src/yamlRestTest/resources/rest-api-spec/test/search.vectors/130_knn_query_nested_search.yml
index bf07144975650..af9593365d98c 100644
--- a/rest-api-spec/src/yamlRestTest/resources/rest-api-spec/test/search.vectors/130_knn_query_nested_search.yml
+++ b/rest-api-spec/src/yamlRestTest/resources/rest-api-spec/test/search.vectors/130_knn_query_nested_search.yml
@@ -1,7 +1,7 @@
 setup:
   - requires:
-      cluster_features: "gte_v8.12.0"
-      reason: 'knn as query added in 8.12'
+      cluster_features: "search.vectors.k_param_supported"
+      reason: 'k param for knn as query is required'
   - do:
       indices.create:
         index: test
diff --git a/rest-api-spec/src/yamlRestTest/resources/rest-api-spec/test/search.vectors/140_knn_query_with_other_queries.yml b/rest-api-spec/src/yamlRestTest/resources/rest-api-spec/test/search.vectors/140_knn_query_with_other_queries.yml
index 1e54e497f286f..639b91641fca6 100644
--- a/rest-api-spec/src/yamlRestTest/resources/rest-api-spec/test/search.vectors/140_knn_query_with_other_queries.yml
+++ b/rest-api-spec/src/yamlRestTest/resources/rest-api-spec/test/search.vectors/140_knn_query_with_other_queries.yml
@@ -1,8 +1,8 @@
 # test how knn query interact with other queries
 setup:
   - requires:
-      cluster_features: "gte_v8.12.0"
-      reason: 'knn as query added in 8.12'
+      cluster_features: "search.vectors.k_param_supported"
+      reason: 'k param for knn as query is required'
       test_runner_features: close_to
 
   - do:
diff --git a/rest-api-spec/src/yamlRestTest/resources/rest-api-spec/test/search.vectors/160_knn_query_missing_params.yml b/rest-api-spec/src/yamlRestTest/resources/rest-api-spec/test/search.vectors/160_knn_query_missing_params.yml
index 26c52060dfb22..d7cf3b793ac29 100644
--- a/rest-api-spec/src/yamlRestTest/resources/rest-api-spec/test/search.vectors/160_knn_query_missing_params.yml
+++ b/rest-api-spec/src/yamlRestTest/resources/rest-api-spec/test/search.vectors/160_knn_query_missing_params.yml
@@ -1,7 +1,7 @@
 setup:
   - requires:
-      cluster_features: "gte_v8.13.0"
-      reason: '[k] and [num_candidates] were made optional for kNN query in 8.13.0'
+      cluster_features: "search.vectors.k_param_supported"
+      reason: 'k param for knn as query is required'
   - do:
       indices.create:
         index: knn_query_test_index
diff --git a/rest-api-spec/src/yamlRestTest/resources/rest-api-spec/test/search.vectors/180_update_dense_vector_type.yml b/rest-api-spec/src/yamlRestTest/resources/rest-api-spec/test/search.vectors/180_update_dense_vector_type.yml
index 99943ef2671bb..c9afc7c9b3948 100644
--- a/rest-api-spec/src/yamlRestTest/resources/rest-api-spec/test/search.vectors/180_update_dense_vector_type.yml
+++ b/rest-api-spec/src/yamlRestTest/resources/rest-api-spec/test/search.vectors/180_update_dense_vector_type.yml
@@ -1,7 +1,7 @@
 setup:
   - requires:
-      cluster_features: "gte_v8.15.0"
-      reason: 'updatable dense vector field types was added in 8.15'
+      cluster_features: "search.vectors.k_param_supported"
+      reason: 'k param for knn as query is required'
   - requires:
       test_runner_features: [ contains ]
 ---