diff --git a/tests/kernel/threads/dynamic_thread/prj.conf b/tests/kernel/threads/dynamic_thread/prj.conf
index 8174ea88529..f7d01312787 100644
--- a/tests/kernel/threads/dynamic_thread/prj.conf
+++ b/tests/kernel/threads/dynamic_thread/prj.conf
@@ -1,4 +1,4 @@
 CONFIG_ZTEST=y
 CONFIG_ZTEST_NEW_API=y
 CONFIG_TEST_USERSPACE=y
-CONFIG_HEAP_MEM_POOL_SIZE=20000
+CONFIG_HEAP_MEM_POOL_SIZE=21504