diff --git a/flake.lock b/flake.lock
index 80631d2..858917b 100644
--- a/flake.lock
+++ b/flake.lock
@@ -87,15 +87,16 @@
         "rust-overlay": "rust-overlay"
       },
       "locked": {
-        "lastModified": 1663265701,
-        "narHash": "sha256-0sZULukbNmlhkH2+dwWK83zN5gRaZCoUBlSjMENg2o8=",
+        "lastModified": 1663552335,
+        "narHash": "sha256-WdBRfp0shz6Xhwx0fEUQwROK52XNDTkmhC2xkdT+INA=",
         "owner": "oxalica",
         "repo": "nil",
-        "rev": "9e395607ad6dd8e771b8b0979ae738e845e7000c",
+        "rev": "a16525ec851d4121577bb8566b08f09bbb09fda4",
         "type": "github"
       },
       "original": {
         "owner": "oxalica",
+        "ref": "2022-09-19",
         "repo": "nil",
         "type": "github"
       }
diff --git a/flake.nix b/flake.nix
index 88d076c..4066b63 100644
--- a/flake.nix
+++ b/flake.nix
@@ -14,7 +14,7 @@
 
     # nix lsp
     nil = {
-      url = "github:oxalica/nil";
+      url = "github:oxalica/nil/2022-09-19";
       inputs.nixpkgs.follows = "nixpkgs";
     };