diff --git a/proxmox-shared-memory/src/lib.rs b/proxmox-shared-memory/src/lib.rs
index df6fd7e5..ffe41c32 100644
--- a/proxmox-shared-memory/src/lib.rs
+++ b/proxmox-shared-memory/src/lib.rs
@@ -1,4 +1,5 @@
 #![cfg_attr(docsrs, feature(doc_cfg, doc_auto_cfg))]
+#![deny(unsafe_op_in_unsafe_fn)]
 
 use std::ffi::{CStr, CString};
 use std::fs::File;
diff --git a/proxmox-sys/src/lib.rs b/proxmox-sys/src/lib.rs
index c75cd69f..6d2d4196 100644
--- a/proxmox-sys/src/lib.rs
+++ b/proxmox-sys/src/lib.rs
@@ -1,4 +1,5 @@
 #![cfg_attr(docsrs, feature(doc_cfg, doc_auto_cfg))]
+#![deny(unsafe_op_in_unsafe_fn)]
 
 use std::os::fd::{FromRawFd, OwnedFd};
 use std::os::unix::ffi::OsStrExt;