diff --git a/embed_macros/Cargo.toml b/embed_macros/Cargo.toml
index 9edefa2..bea8357 100644
--- a/embed_macros/Cargo.toml
+++ b/embed_macros/Cargo.toml
@@ -10,7 +10,7 @@ version     = "0.1.0"
 edition     = "2021"
 
 [lib]
-proc_macro = true
+proc-macro = true
 
 [dependencies]
 proc-macro2 = { version = "1", features = [ "span-locations" ] }