diff --git a/x-pack/plugin/esql/qa/server/single-node/src/javaRestTest/java/org/elasticsearch/xpack/esql/qa/single_node/HeapAttackIT.java b/x-pack/plugin/esql/qa/server/single-node/src/javaRestTest/java/org/elasticsearch/xpack/esql/qa/single_node/HeapAttackIT.java
index 49a37840c4fad..7f79ea0aaab87 100644
--- a/x-pack/plugin/esql/qa/server/single-node/src/javaRestTest/java/org/elasticsearch/xpack/esql/qa/single_node/HeapAttackIT.java
+++ b/x-pack/plugin/esql/qa/server/single-node/src/javaRestTest/java/org/elasticsearch/xpack/esql/qa/single_node/HeapAttackIT.java
@@ -111,6 +111,7 @@ public void testGroupOnSomeLongs() throws IOException {
     /**
      * This groups on 5000 columns which used to throw a {@link StackOverflowError}.
      */
+    @AwaitsFix( bugUrl = "https://github.com/elastic/elasticsearch/issues/100640")
     public void testGroupOnManyLongs() throws IOException {
         initManyLongs();
         Map<?, ?> map = XContentHelper.convertToMap(
@@ -179,6 +180,7 @@ private Response concat(int evals) throws IOException {
     /**
      * Returns many moderately long strings.
      */
+    @AwaitsFix(bugUrl = "https://github.com/elastic/elasticsearch/issues/100678")
     public void testManyConcat() throws IOException {
         initManyLongs();
         Map<?, ?> map = XContentHelper.convertToMap(JsonXContent.jsonXContent, EntityUtils.toString(manyConcat(300).getEntity()), false);