diff --git a/Cargo.lock b/Cargo.lock
index a3d6026..b5f81be 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -2,6 +2,14 @@
 # It is not intended for manual editing.
 version = 3
 
+[[package]]
+name = "dotenvy"
+version = "0.15.7"
+source = "git+https://github.com/allan2/dotenvy.git#e2da110668572cf2d67178f192eb1fc285224040"
+
 [[package]]
 name = "dotenvy-practice"
 version = "0.1.0"
+dependencies = [
+ "dotenvy",
+]
diff --git a/Cargo.toml b/Cargo.toml
index e0489ba..bc72183 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -4,3 +4,4 @@ version = "0.1.0"
 edition = "2021"
 
 [dependencies]
+dotenvy = { git = "https://github.com/allan2/dotenvy.git", version = "0.15.7" }
diff --git a/src/main.rs b/src/main.rs
index e7a11a9..61d9738 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -1,3 +1,9 @@
+use dotenvy::{EnvLoader, EnvSequence};
+
 fn main() {
+    EnvLoader::new().sequence(EnvSequence::EnvOnly).load().unwrap(); // Not panics
+    EnvLoader::new().sequence(EnvSequence::EnvThenInput).load().unwrap(); // Panics
+    EnvLoader::new().sequence(EnvSequence::InputThenEnv).load().unwrap(); // Panics
+    EnvLoader::new().sequence(EnvSequence::InputOnly).load().unwrap(); // Panics
     println!("Hello, world!");
 }