diff --git a/tee-worker/identity/enclave-runtime/Enclave.config.production.xml b/tee-worker/identity/enclave-runtime/Enclave.config.production.xml
index 595f9dec07..7ae67ed727 100644
--- a/tee-worker/identity/enclave-runtime/Enclave.config.production.xml
+++ b/tee-worker/identity/enclave-runtime/Enclave.config.production.xml
@@ -3,7 +3,7 @@
   <ProdID>0</ProdID>
   <ISVSVN>0</ISVSVN>
   <StackMaxSize>0x40000</StackMaxSize>
-  <HeapMaxSize>0x20000000</HeapMaxSize>
+  <HeapMaxSize>0x80000000</HeapMaxSize>
   <TCSNum>1024</TCSNum>
   <TCSPolicy>0</TCSPolicy> <!-- 0 = Thread Control Structure (TCS) is bound to the untrusted thread -->
   <DisableDebug>1</DisableDebug>