diff --git a/alloc/Cargo.toml b/alloc/Cargo.toml
index 14be87f..7b989b8 100644
--- a/alloc/Cargo.toml
+++ b/alloc/Cargo.toml
@@ -24,4 +24,4 @@ pre-release-replacements = [
 ]
 
 [dependencies]
-mc-sgx-tservice-sys = "0.6.0"
+mc-sgx-tservice-sys = "0.7.4"