diff --git a/ferrunix-macros/Cargo.toml b/ferrunix-macros/Cargo.toml
index 1e6e10e..0fd7964 100644
--- a/ferrunix-macros/Cargo.toml
+++ b/ferrunix-macros/Cargo.toml
@@ -20,11 +20,12 @@ categories.workspace = true
 proc-macro = true
 
 [features]
-default = ["development"]
+default = ["development", "multithread"]
+multithread = ["ferrunix-core/multithread"]
 development = ["syn/extra-traits", "dep:prettyplease"]
 
 [dependencies]
-ferrunix-core.workspace = true
+ferrunix-core = { path = "../ferrunix-core", default-features = false, version = "0.1.0" }
 
 syn = { version = "2", features = ["extra-traits"] }
 prettyplease = { version = "0.2", optional = true }
diff --git a/ferrunix/Cargo.toml b/ferrunix/Cargo.toml
index 8c7cd73..3e67397 100644
--- a/ferrunix/Cargo.toml
+++ b/ferrunix/Cargo.toml
@@ -22,7 +22,7 @@ multithread = ["ferrunix-core/multithread"]
 derive = ["dep:ferrunix-macros"]
 
 [dependencies]
-ferrunix-core = { path = "../ferrunix-core", default-features = false }
+ferrunix-core = { path = "../ferrunix-core", default-features = false, version = "0.1.0" }
 
 # Optional dependencies
 ferrunix-macros = { workspace = true, optional = true }