diff --git a/Cargo.toml b/Cargo.toml
index 8929224..78a3a22 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,7 +1,3 @@
-[package]
-name = "ged"
-version = "0.1.0"
-edition = "2021"
-
-[dev-dependencies]
-ntest = "0.9.3"
+[workspace]
+resolver = "2"
+members = ["core"]
\ No newline at end of file
diff --git a/core/Cargo.toml b/core/Cargo.toml
new file mode 100644
index 0000000..9bcd248
--- /dev/null
+++ b/core/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "ged-core"
+version = "0.1.0"
+edition = "2021"
+
+[dev-dependencies]
+ntest = "0.9.3"
diff --git a/src/core/fibbonacci.rs b/core/src/fibbonacci.rs
similarity index 100%
rename from src/core/fibbonacci.rs
rename to core/src/fibbonacci.rs
diff --git a/src/core/mod.rs b/core/src/lib.rs
similarity index 100%
rename from src/core/mod.rs
rename to core/src/lib.rs
diff --git a/src/core/rope.rs b/core/src/rope.rs
similarity index 100%
rename from src/core/rope.rs
rename to core/src/rope.rs
diff --git a/src/main.rs b/src/main.rs
deleted file mode 100644
index 4b419a6..0000000
--- a/src/main.rs
+++ /dev/null
@@ -1,5 +0,0 @@
-mod core;
-
-fn main() {
-    println!("Hello, world!");
-}