diff --git a/library/compiler-builtins/libm/crates/libm-macros/Cargo.toml b/library/compiler-builtins/libm/crates/libm-macros/Cargo.toml
index 9d2b08e2d78f..3da9d45a2b9d 100644
--- a/library/compiler-builtins/libm/crates/libm-macros/Cargo.toml
+++ b/library/compiler-builtins/libm/crates/libm-macros/Cargo.toml
@@ -2,6 +2,7 @@
 name = "libm-macros"
 version = "0.1.0"
 edition = "2021"
+publish = false
 
 [lib]
 proc-macro = true
diff --git a/library/compiler-builtins/libm/crates/musl-math-sys/Cargo.toml b/library/compiler-builtins/libm/crates/musl-math-sys/Cargo.toml
index 449ce4f3ed1f..7f6272d79ed9 100644
--- a/library/compiler-builtins/libm/crates/musl-math-sys/Cargo.toml
+++ b/library/compiler-builtins/libm/crates/musl-math-sys/Cargo.toml
@@ -2,6 +2,7 @@
 name = "musl-math-sys"
 version = "0.1.0"
 edition = "2021"
+publish = false
 
 [dependencies]