diff --git a/Cargo.toml b/Cargo.toml
index 9b9ad02..eb2d517 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -25,7 +25,7 @@ unstable = []
 # musl libc.
 musl-reference-tests = ['rand']
 
-rustc-dep-of-std = ["core", "compiler_builtins/rustc-dep-of-std"]
+rustc-dep-of-std = ["core"]
 
 [workspace]
 members = [
@@ -35,7 +35,7 @@ members = [
 
 [dependencies]
 core = { version = "1.0.0", optional = true, package = "rustc-std-workspace-core" }
-compiler_builtins = { version = "0.1", optional = true }
+# compiler_builtins = { version = "0.1", optional = true }
 
 [dev-dependencies]
 no-panic = "0.1.8"