diff --git a/add/Cargo.lock b/add/Cargo.lock
index 867106b..505dcf8 100644
--- a/add/Cargo.lock
+++ b/add/Cargo.lock
@@ -9,3 +9,6 @@ version = "0.1.0"
 [[package]]
 name = "adder"
 version = "0.1.0"
+dependencies = [
+ "add_one",
+]
diff --git a/add/adder/Cargo.toml b/add/adder/Cargo.toml
index 9a5826a..5f4a489 100644
--- a/add/adder/Cargo.toml
+++ b/add/adder/Cargo.toml
@@ -4,3 +4,4 @@ version = "0.1.0"
 edition = "2024"
 
 [dependencies]
+add_one = { path = "../add_one" }
diff --git a/add/adder/src/main.rs b/add/adder/src/main.rs
index e7a11a9..1316294 100644
--- a/add/adder/src/main.rs
+++ b/add/adder/src/main.rs
@@ -1,3 +1,6 @@
+use add_one;
+
 fn main() {
-    println!("Hello, world!");
+    let num = 10;
+    println!("Hello, world! {num} plus one is {}!", add_one::add_one(num));
 }