diff --git a/Cargo.toml b/Cargo.toml
index b1155bb..fbcf5f4 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -46,7 +46,9 @@ std = [
   "pin-project-lite",
   "pin-utils",
   "slab",
+  "no-std",
 ]
+no-std = []
 
 [dependencies]
 async-attributes = { version = "1.1.1", optional = true }