diff --git a/rust/nix-expr/src/value.rs b/rust/nix-expr/src/value.rs
index 1781e23..e15d5b9 100644
--- a/rust/nix-expr/src/value.rs
+++ b/rust/nix-expr/src/value.rs
@@ -53,7 +53,6 @@ impl ValueType {
 pub struct Value {
     inner: NonNull<raw::Value>,
 }
-unsafe impl Send for Value {}
 impl Value {
     /// Take ownership of a new Value.
     ///