diff --git a/Cargo.toml b/Cargo.toml
index cbf4516d..1482aeb5 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -79,6 +79,8 @@ zstd = { version = "0.4", features = [ "bindgen" ] }
 nom = "5.1"
 crossbeam-channel = "0.5"
 
+proxmox-acme-rs = "0.2.1"
+
 [features]
 default = []
 #valgrind = ["valgrind_request"]