diff --git a/fluent-ergonomics/flake.lock b/fluent-ergonomics/flake.lock
new file mode 100644
index 0000000..97e7bf5
--- /dev/null
+++ b/fluent-ergonomics/flake.lock
@@ -0,0 +1,73 @@
+{
+  "nodes": {
+    "flake-utils": {
+      "locked": {
+        "lastModified": 1637014545,
+        "narHash": "sha256-26IZAc5yzlD9FlDT54io1oqG/bBoyka+FJk5guaX4x4=",
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "rev": "bba5dcc8e0b20ab664967ad83d24d64cb64ec4f4",
+        "type": "github"
+      },
+      "original": {
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "type": "github"
+      }
+    },
+    "nixpkgs": {
+      "locked": {
+        "lastModified": 1650400979,
+        "narHash": "sha256-OjWH2+HyxOwiO2jP01E1QH06gArw+zLWbCQMgEve9gg=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "147b03fa8ebf9d5d5f6784f87dc61f0e7beee911",
+        "type": "github"
+      },
+      "original": {
+        "id": "nixpkgs",
+        "ref": "nixos-21.11",
+        "type": "indirect"
+      }
+    },
+    "nixpkgs_2": {
+      "locked": {
+        "lastModified": 1637453606,
+        "narHash": "sha256-Gy6cwUswft9xqsjWxFYEnx/63/qzaFUwatcbV5GF/GQ=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "8afc4e543663ca0a6a4f496262cd05233737e732",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NixOS",
+        "ref": "nixpkgs-unstable",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "oxalica": {
+      "inputs": {
+        "flake-utils": "flake-utils",
+        "nixpkgs": "nixpkgs_2"
+      },
+      "locked": {
+        "narHash": "sha256-lW3mZGsH0WYPI+zr/CzbDoWvRliYEHDT906yRx6NboY=",
+        "type": "tarball",
+        "url": "https://github.com/oxalica/rust-overlay/archive/master.tar.gz"
+      },
+      "original": {
+        "type": "tarball",
+        "url": "https://github.com/oxalica/rust-overlay/archive/master.tar.gz"
+      }
+    },
+    "root": {
+      "inputs": {
+        "nixpkgs": "nixpkgs",
+        "oxalica": "oxalica"
+      }
+    }
+  },
+  "root": "root",
+  "version": 7
+}