diff --git a/nix-bindings-bdwgc-sys/Cargo.toml b/nix-bindings-bdwgc-sys/Cargo.toml
index ff4bc1e..4516766 100644
--- a/nix-bindings-bdwgc-sys/Cargo.toml
+++ b/nix-bindings-bdwgc-sys/Cargo.toml
@@ -4,6 +4,7 @@ version = "0.2.0"
 edition = "2021"
 build = "build.rs"
 license = "LGPL-2.1"
+description = "Low-level FFI bindings to the Boehm-Demers-Weiser garbage collector"
 repository = "https://github.com/nixops4/nix-bindings-rust"
 readme = "README.md"
 
diff --git a/nix-bindings-expr-sys/Cargo.toml b/nix-bindings-expr-sys/Cargo.toml
index 1512326..af12a4e 100644
--- a/nix-bindings-expr-sys/Cargo.toml
+++ b/nix-bindings-expr-sys/Cargo.toml
@@ -4,6 +4,7 @@ version = "0.2.0"
 edition = "2021"
 build = "build.rs"
 license = "LGPL-2.1"
+description = "Low-level FFI bindings to the Nix expression evaluator"
 repository = "https://github.com/nixops4/nix-bindings-rust"
 readme = "README.md"
 
diff --git a/nix-bindings-fetchers-sys/Cargo.toml b/nix-bindings-fetchers-sys/Cargo.toml
index a4742c9..6986909 100644
--- a/nix-bindings-fetchers-sys/Cargo.toml
+++ b/nix-bindings-fetchers-sys/Cargo.toml
@@ -4,6 +4,7 @@ version = "0.2.0"
 edition = "2021"
 build = "build.rs"
 license = "LGPL-2.1"
+description = "Low-level FFI bindings to the nix-fetchers library"
 repository = "https://github.com/nixops4/nix-bindings-rust"
 readme = "README.md"
 
diff --git a/nix-bindings-flake-sys/Cargo.toml b/nix-bindings-flake-sys/Cargo.toml
index ecc3e99..a04257c 100644
--- a/nix-bindings-flake-sys/Cargo.toml
+++ b/nix-bindings-flake-sys/Cargo.toml
@@ -4,6 +4,7 @@ version = "0.2.0"
 edition = "2021"
 build = "build.rs"
 license = "LGPL-2.1"
+description = "Low-level FFI bindings to Nix flakes"
 repository = "https://github.com/nixops4/nix-bindings-rust"
 readme = "README.md"
 
diff --git a/nix-bindings-store-sys/Cargo.toml b/nix-bindings-store-sys/Cargo.toml
index c1e03f2..2cbf9e2 100644
--- a/nix-bindings-store-sys/Cargo.toml
+++ b/nix-bindings-store-sys/Cargo.toml
@@ -4,6 +4,7 @@ version = "0.2.0"
 edition = "2021"
 build = "build.rs"
 license = "LGPL-2.1"
+description = "Low-level FFI bindings to the Nix store library"
 repository = "https://github.com/nixops4/nix-bindings-rust"
 readme = "README.md"