diff --git a/Cargo.toml b/Cargo.toml
index ec82d391..095f6594 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -139,6 +139,7 @@ wildcard_dependencies = "warn"
 print_stderr = "warn"
 print_stdout = "warn"
 dbg_macro = "warn"
+todo = "warn"
 
 [profile.dev]
 opt-level = 1