diff --git a/Cargo.toml b/Cargo.toml
index f240aaa4..d6fc4ebb 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -100,6 +100,7 @@ cast_sign_loss = "warn"
 filetype_is_file = "warn"
 float_cmp = "warn"
 lossy_float_literal = "warn"
+float_cmp_const = "warn"
 as_underscore = "warn"
 # TODO: unwrap_used = "warn" # Let’s either handle `None`, `Err` or use `expect` to give a reason.
 large_stack_frames = "warn"