diff --git a/.gitignore b/.gitignore
index 94c73977ef0f31..db2a8139cd3fdc 100644
--- a/.gitignore
+++ b/.gitignore
@@ -2,6 +2,7 @@
 **/cargo-target
 **/target
 **/venv
+**/.direnv
 *.wasm
 *.xcodeproj
 .DS_Store
diff --git a/flake.lock b/flake.lock
index c09eb90d2defe0..cb96136c425630 100644
--- a/flake.lock
+++ b/flake.lock
@@ -32,18 +32,15 @@
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1743095683,
-        "narHash": "sha256-gWd4urRoLRe8GLVC/3rYRae1h+xfQzt09xOfb0PaHSk=",
-        "owner": "NixOS",
-        "repo": "nixpkgs",
-        "rev": "5e5402ecbcb27af32284d4a62553c019a3a49ea6",
-        "type": "github"
+        "lastModified": 315532800,
+        "narHash": "sha256-kgy4FnRFGj62QO3kI6a6glFl8XUtKMylWGybnVCvycM=",
+        "rev": "b3582c75c7f21ce0b429898980eddbbf05c68e55",
+        "type": "tarball",
+        "url": "https://releases.nixos.org/nixpkgs/nixpkgs-25.05pre796313.b3582c75c7f2/nixexprs.tar.xz?rev=b3582c75c7f21ce0b429898980eddbbf05c68e55"
       },
       "original": {
-        "owner": "NixOS",
-        "ref": "nixos-unstable",
-        "repo": "nixpkgs",
-        "type": "github"
+        "type": "tarball",
+        "url": "https://channels.nixos.org/nixpkgs-unstable/nixexprs.tar.xz"
       }
     },
     "root": {
diff --git a/flake.nix b/flake.nix
index 834b9aa9f2f3c6..2c40afcf37d729 100644
--- a/flake.nix
+++ b/flake.nix
@@ -2,7 +2,7 @@
   description = "High-performance, multiplayer code editor from the creators of Atom and Tree-sitter";
 
   inputs = {
-    nixpkgs.url = "github:NixOS/nixpkgs?ref=nixos-unstable";
+    nixpkgs.url = "https://channels.nixos.org/nixpkgs-unstable/nixexprs.tar.xz";
     rust-overlay = {
       url = "github:oxalica/rust-overlay";
       inputs.nixpkgs.follows = "nixpkgs";