diff --git a/lib/macro/Cargo.toml b/lib/macro/Cargo.toml
index 17e7d4e..1862f9c 100644
--- a/lib/macro/Cargo.toml
+++ b/lib/macro/Cargo.toml
@@ -20,6 +20,6 @@ default = ["stable"]
 stable = ["data-encoding-macro-internal/stable", "proc-macro-hack"]
 
 [dependencies]
-data-encoding = { version = "2.2", path = ".." }
+data-encoding = { version = "2.3", path = "..", default-features = false, features = ["alloc"] }
 data-encoding-macro-internal = { version = "0.1.8", path = "internal" }
 proc-macro-hack = { version = "0.5", optional = true }
diff --git a/lib/macro/internal/Cargo.toml b/lib/macro/internal/Cargo.toml
index 81b6cce..2df0d99 100644
--- a/lib/macro/internal/Cargo.toml
+++ b/lib/macro/internal/Cargo.toml
@@ -16,6 +16,6 @@ proc-macro = true
 stable = ["proc-macro-hack"]
 
 [dependencies]
-data-encoding = { version = "2.2", path = "../.." }
+data-encoding = { version = "2.3", path = "../..", default-features = false, features = ["alloc"] }
 proc-macro-hack = { version = "0.5", optional = true }
 syn = "1"
diff --git a/lib/macro/src/lib.rs b/lib/macro/src/lib.rs
index bae3c25..74a397b 100644
--- a/lib/macro/src/lib.rs
+++ b/lib/macro/src/lib.rs
@@ -74,6 +74,7 @@
 
 #![cfg_attr(not(feature = "stable"), feature(proc_macro_hygiene))]
 #![warn(unused_results)]
+#![no_std]
 
 #[cfg(feature = "stable")]
 extern crate proc_macro_hack;