diff --git a/proxmox-rest-server/Cargo.toml b/proxmox-rest-server/Cargo.toml
index 8200c7d5..2b99abe0 100644
--- a/proxmox-rest-server/Cargo.toml
+++ b/proxmox-rest-server/Cargo.toml
@@ -31,7 +31,7 @@ tower-service = "0.3.0"
 url = "2.1"
 
 #proxmox = "0.15.3"
-proxmox-async = "0.3"
+proxmox-async = "0.4"
 proxmox-compression = "0.1"
 proxmox-io = "1"
 proxmox-lang = "1.1"