diff --git a/.gitignore b/.gitignore
index 2b03a20..287729a 100644
--- a/.gitignore
+++ b/.gitignore
@@ -5,3 +5,4 @@ cmd/cli
 cmd/pttodo/pttodo
 cmd/pttodo-cli/pttodo-cli
 cmd/pttodo-cli
+pttodoer/target
diff --git a/pttodoer/Cargo.lock b/pttodoer/Cargo.lock
new file mode 100644
index 0000000..e22b45c
--- /dev/null
+++ b/pttodoer/Cargo.lock
@@ -0,0 +1,7 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+version = 3
+
+[[package]]
+name = "pttodoer"
+version = "0.1.0"
diff --git a/pttodoer/Cargo.toml b/pttodoer/Cargo.toml
new file mode 100644
index 0000000..56390ea
--- /dev/null
+++ b/pttodoer/Cargo.toml
@@ -0,0 +1,8 @@
+[package]
+name = "pttodoer"
+version = "0.1.0"
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
diff --git a/pttodoer/src/main.rs b/pttodoer/src/main.rs
new file mode 100644
index 0000000..e7a11a9
--- /dev/null
+++ b/pttodoer/src/main.rs
@@ -0,0 +1,3 @@
+fn main() {
+    println!("Hello, world!");
+}