diff --git a/src/lib.rs b/src/lib.rs
index f7d9062b..50ca6ea6 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -1,4 +1,6 @@
 #![allow(clippy::suspicious_else_formatting)]
+#![deny(clippy::dbg_macro)]
+
 pub mod appservice_server;
 pub mod client_server;
 mod database;
diff --git a/src/main.rs b/src/main.rs
index 1c058b09..1d6d23ab 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -1,5 +1,6 @@
 #![warn(rust_2018_idioms)]
 #![allow(clippy::suspicious_else_formatting)]
+#![deny(clippy::dbg_macro)]
 
 pub mod appservice_server;
 pub mod client_server;