diff --git a/Cargo.lock b/Cargo.lock
index bcbdc71..1f07418 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -5,6 +5,9 @@ version = 4
 [[package]]
 name = "example_bin"
 version = "0.1.0"
+dependencies = [
+ "example_lib",
+]
 
 [[package]]
 name = "example_lib"
diff --git a/example_bin/Cargo.toml b/example_bin/Cargo.toml
index d734bc5..2f3ebc2 100644
--- a/example_bin/Cargo.toml
+++ b/example_bin/Cargo.toml
@@ -4,3 +4,4 @@ version = "0.1.0"
 edition = "2024"
 
 [dependencies]
+example_lib = { path = "../example_lib" }
diff --git a/example_bin/src/main.rs b/example_bin/src/main.rs
index e7a11a9..ee45461 100644
--- a/example_bin/src/main.rs
+++ b/example_bin/src/main.rs
@@ -1,3 +1,11 @@
+use example_lib::*;
+
 fn main() {
     println!("Hello, world!");
+
+    let result = add(1, 1);
+    assert_eq!(result, 2);
+
+    let result = sub(1, 1);
+    assert_eq!(result, 0);
 }