diff --git a/.envrc b/.envrc
new file mode 100644
index 0000000..3550a30
--- /dev/null
+++ b/.envrc
@@ -0,0 +1 @@
+use flake
diff --git a/flake.lock b/flake.lock
new file mode 100644
index 0000000..9a99dea
--- /dev/null
+++ b/flake.lock
@@ -0,0 +1,148 @@
+{
+  "nodes": {
+    "lix-unit": {
+      "inputs": {
+        "mdbook-nixdoc": [
+          "pyproject-nix",
+          "mdbook-nixdoc"
+        ],
+        "nix-github-actions": [
+          "pyproject-nix",
+          "nix-github-actions"
+        ],
+        "nixpkgs": [
+          "pyproject-nix",
+          "nixpkgs"
+        ],
+        "treefmt-nix": [
+          "pyproject-nix",
+          "treefmt-nix"
+        ]
+      },
+      "locked": {
+        "lastModified": 1727322567,
+        "narHash": "sha256-scZo6AyJTxTK9wYW0HmWDzLxVxOoFr7/XkIVJCmmOe4=",
+        "owner": "adisbladis",
+        "repo": "lix-unit",
+        "rev": "59c489dbc5b27a83fadc94fde2c2b69abb4c0e80",
+        "type": "github"
+      },
+      "original": {
+        "owner": "adisbladis",
+        "repo": "lix-unit",
+        "type": "github"
+      }
+    },
+    "mdbook-nixdoc": {
+      "inputs": {
+        "nix-github-actions": [
+          "pyproject-nix",
+          "nix-github-actions"
+        ],
+        "nixpkgs": [
+          "pyproject-nix",
+          "nixpkgs"
+        ]
+      },
+      "locked": {
+        "lastModified": 1708395692,
+        "narHash": "sha256-smf0VmxGbjJDZqKvxxG3ZVqubgbVwAWG26wPo+BT/A0=",
+        "owner": "adisbladis",
+        "repo": "mdbook-nixdoc",
+        "rev": "d6a71b114b9221c0b4f20d31b81766d072cc26be",
+        "type": "github"
+      },
+      "original": {
+        "owner": "adisbladis",
+        "repo": "mdbook-nixdoc",
+        "type": "github"
+      }
+    },
+    "nix-github-actions": {
+      "inputs": {
+        "nixpkgs": [
+          "pyproject-nix",
+          "nixpkgs"
+        ]
+      },
+      "locked": {
+        "lastModified": 1720066371,
+        "narHash": "sha256-uPlLYH2S0ACj0IcgaK9Lsf4spmJoGejR9DotXiXSBZQ=",
+        "owner": "nix-community",
+        "repo": "nix-github-actions",
+        "rev": "622f829f5fe69310a866c8a6cd07e747c44ef820",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nix-community",
+        "repo": "nix-github-actions",
+        "type": "github"
+      }
+    },
+    "nixpkgs": {
+      "locked": {
+        "lastModified": 0,
+        "narHash": "sha256-/uilDXvCIEs3C9l73JTACm4quuHUsIHcns1c+cHUJwA=",
+        "path": "/nix/store/riqkpszjqk02bi1wppfg8ip5xvh102qd-source",
+        "type": "path"
+      },
+      "original": {
+        "id": "nixpkgs",
+        "type": "indirect"
+      }
+    },
+    "pyproject-nix": {
+      "inputs": {
+        "lix-unit": "lix-unit",
+        "mdbook-nixdoc": "mdbook-nixdoc",
+        "nix-github-actions": "nix-github-actions",
+        "nixpkgs": [
+          "nixpkgs"
+        ],
+        "treefmt-nix": "treefmt-nix"
+      },
+      "locked": {
+        "lastModified": 1730052395,
+        "narHash": "sha256-5H4qnt59qHP3jCT8uN/cS33UOXb8NWexp6VoOZWNg/8=",
+        "owner": "nix-community",
+        "repo": "pyproject.nix",
+        "rev": "4f11e92083538681d011750dbe3450782e9e0e50",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nix-community",
+        "repo": "pyproject.nix",
+        "type": "github"
+      }
+    },
+    "root": {
+      "inputs": {
+        "nixpkgs": "nixpkgs",
+        "pyproject-nix": "pyproject-nix"
+      }
+    },
+    "treefmt-nix": {
+      "inputs": {
+        "nixpkgs": [
+          "pyproject-nix",
+          "nixpkgs"
+        ]
+      },
+      "locked": {
+        "lastModified": 1727252110,
+        "narHash": "sha256-3O7RWiXpvqBcCl84Mvqa8dXudZ1Bol1ubNdSmQt7nF4=",
+        "owner": "numtide",
+        "repo": "treefmt-nix",
+        "rev": "1bff2ba6ec22bc90e9ad3f7e94cca0d37870afa3",
+        "type": "github"
+      },
+      "original": {
+        "owner": "numtide",
+        "repo": "treefmt-nix",
+        "type": "github"
+      }
+    }
+  },
+  "root": "root",
+  "version": 7
+}
diff --git a/flake.nix b/flake.nix
index c61f7fd..1bd80dd 100644
--- a/flake.nix
+++ b/flake.nix
@@ -36,7 +36,16 @@
 
         in
         # Create a devShell like normal.
-        pkgs.mkShell { packages = [ pythonEnv ]; };
+        pkgs.mkShell {
+          packages = [
+            pythonEnv
+            pkgs.python311Packages.python-lsp-server
+            pkgs.python311Packages.python-lsp-ruff
+            pkgs.python311Packages.pylsp-mypy
+            pkgs.python311Packages.mypy
+            pkgs.python311Packages.isort
+          ];
+        };
 
       # Build our package using `buildPythonPackage
       packages.x86_64-linux.default =
diff --git a/pyproject.toml b/pyproject.toml
index 0c313a2..98cd69f 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -12,9 +12,8 @@ version = "0.0.1"
 readme = "README.md"
 requires-python = ">=3.7"
 dependencies = [
-    "requests > 2.26.0",
-    "pandas"
+    "yfinance"
 ]
 
 [project.scripts]
-stock = "stock:main"
+stock = "stock.stock:main"
diff --git a/stock/__init__.py b/stock/__init__.py
new file mode 100644
index 0000000..e69de29
diff --git a/stock/stock.py b/stock/stock.py
new file mode 100644
index 0000000..c586d9f
--- /dev/null
+++ b/stock/stock.py
@@ -0,0 +1,25 @@
+import yfinance as yf
+import json
+import argparse
+
+
+def main():
+    parser = argparse.ArgumentParser()
+    parser.add_argument("stocks", metavar="N", type=str, nargs="+")
+
+    args = parser.parse_args()
+
+    stocks = args.stocks
+    daylows = [{"stock": stock, "daylow": return_daylow(stock)} for stock in stocks]
+
+    print(json.dumps(daylows))
+
+
+def return_daylow(stock: str):
+    msft = yf.Ticker(stock)
+
+    return msft.info.get("dayLow")
+
+
+if __name__ == "__main__":
+    main()