diff --git a/test/Occlum.json b/test/Occlum.json
index d6a981f6..afd13a85 100644
--- a/test/Occlum.json
+++ b/test/Occlum.json
@@ -2,7 +2,7 @@
     "resource_limits": {
         "kernel_space_heap_size": "40MB",
         "kernel_space_stack_size": "1MB",
-        "user_space_size": "224MB",
+        "user_space_size": "320MB",
         "max_num_of_threads": 32
     },
     "process": {