diff --git a/library/core/src/lib.rs b/library/core/src/lib.rs
index 63ca6e517d21..30fb87b02264 100644
--- a/library/core/src/lib.rs
+++ b/library/core/src/lib.rs
@@ -82,6 +82,7 @@
 #![feature(const_pin)]
 #![feature(const_fn_union)]
 #![feature(const_fn)]
+#![cfg_attr(not(bootstrap), feature(const_fn_floating_point_arithmetic))]
 #![feature(const_generics)]
 #![feature(const_option)]
 #![feature(const_precise_live_drops)]
diff --git a/library/std/src/lib.rs b/library/std/src/lib.rs
index ac0075ad129c..d03428dd0828 100644
--- a/library/std/src/lib.rs
+++ b/library/std/src/lib.rs
@@ -236,6 +236,7 @@
 #![feature(clamp)]
 #![feature(concat_idents)]
 #![feature(const_cstr_unchecked)]
+#![cfg_attr(not(bootstrap), feature(const_fn_floating_point_arithmetic))]
 #![feature(const_fn_transmute)]
 #![feature(const_fn)]
 #![feature(const_ip)]