diff --git a/crates/pacdef_core/Cargo.toml b/crates/pacdef_core/Cargo.toml
index 5810d24..49929e2 100644
--- a/crates/pacdef_core/Cargo.toml
+++ b/crates/pacdef_core/Cargo.toml
@@ -31,7 +31,7 @@ pacdef_macros = { path = "../pacdef_macros", version = "0.1" }
 alpm = { version = "2.2", optional = true }
 rust-apt = { version = "0.5", optional = true }
 
-libc = { version = "*", optional = true }  # for debian
+libc = { version = "0.2", optional = true }  # for debian
 
 [features]
 default = []