diff --git a/demos/golang/grpc_pingpong/prepare_ping_pong.sh b/demos/golang/grpc_pingpong/prepare_ping_pong.sh
index ad24d093..a599ef1c 100755
--- a/demos/golang/grpc_pingpong/prepare_ping_pong.sh
+++ b/demos/golang/grpc_pingpong/prepare_ping_pong.sh
@@ -54,9 +54,9 @@ fi
 if ! type "protoc-gen-go-grpc" > /dev/null 2>&1; then
 	if [[ $GOVERSION != 'go1.16.3' ]];then
 	occlum-go get google.golang.org/grpc/cmd/protoc-gen-go-grpc
-	occlum-go install google.golang.org/grpc/cmd/protoc-gen-go-grpc
+	occlum-go install google.golang.org/grpc/cmd/protoc-gen-go-grpc@v1.3.0
 	else
-	occlum-go get google.golang.org/grpc/cmd/protoc-gen-go-grpc
+	occlum-go get google.golang.org/grpc/cmd/protoc-gen-go-grpc@v1.3.0
 	fi
 fi
 
diff --git a/demos/golang/grpc_pingpong/run_ping_on_occlum.sh b/demos/golang/grpc_pingpong/run_ping_on_occlum.sh
index 8173a8b8..bb49fd22 100755
--- a/demos/golang/grpc_pingpong/run_ping_on_occlum.sh
+++ b/demos/golang/grpc_pingpong/run_ping_on_occlum.sh
@@ -19,10 +19,7 @@ occlum init
 new_json="$(jq '.resource_limits.user_space_size = "1MB" |
 	.resource_limits.user_space_max_size = "800MB" |
 	.resource_limits.kernel_space_heap_size="1MB" |
-	.resource_limits.kernel_space_heap_max_size="40MB" |
-	.resource_limits.kernel_space_stack_size="1MB" |
-	.process.default_stack_size = "1MB" |
-	.process.default_heap_size = "20MB" ' Occlum.json)" && \
+	.resource_limits.kernel_space_heap_max_size="80MB"  ' Occlum.json)" && \
 echo "${new_json}" > Occlum.json
 
 # 2. Copy program into Occlum Workspace and build
diff --git a/demos/golang/grpc_pingpong/run_pong_on_occlum.sh b/demos/golang/grpc_pingpong/run_pong_on_occlum.sh
index 76b447df..eff3a185 100755
--- a/demos/golang/grpc_pingpong/run_pong_on_occlum.sh
+++ b/demos/golang/grpc_pingpong/run_pong_on_occlum.sh
@@ -19,10 +19,7 @@ occlum init
 new_json="$(jq '.resource_limits.user_space_size = "1MB" |
 	.resource_limits.user_space_max_size = "800MB" |
 	.resource_limits.kernel_space_heap_size="1MB" |
-	.resource_limits.kernel_space_heap_max_size="40MB" |
-	.resource_limits.kernel_space_stack_size="1MB" |
-	.process.default_stack_size = "1MB" |
-	.process.default_heap_size = "20MB" ' Occlum.json)" && \
+	.resource_limits.kernel_space_heap_max_size="80MB" ' Occlum.json)" && \
 echo "${new_json}" > Occlum.json
 
 # 2. Copy program into Occlum Workspace and build