diff --git a/Cargo.toml b/Cargo.toml
index 8340578..5fb89f4 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -5,7 +5,7 @@ name = "compiler_builtins"
 version = "0.1.0"
 
 [build-dependencies]
-rustc-cfg = "0.2.0"
+rustc-cfg = "0.3.0"
 gcc = "0.3.36"
 
 [dev-dependencies]