diff --git a/plugins/cairo-lang-macro/Cargo.toml b/plugins/cairo-lang-macro/Cargo.toml
index 53decaf89..bec89f24c 100644
--- a/plugins/cairo-lang-macro/Cargo.toml
+++ b/plugins/cairo-lang-macro/Cargo.toml
@@ -2,6 +2,7 @@
 name = "cairo-lang-macro"
 version = "0.1.1"
 edition.workspace = true
+rust-version = "1.64"
 
 authors.workspace = true
 categories = ["development-tools"]