diff --git a/default.nix b/default.nix
index e408bac28..6b3fa4fd2 100644
--- a/default.nix
+++ b/default.nix
@@ -51,9 +51,6 @@ mixRelease rec {
     );
   };
 
-  # fix elixir locale warning
-  env.LANG = "C.UTF-8";
-
   # Install the compiled js part
   preBuild = ''
     cp -a "${mobilizon-js}/_napalm-install/priv/static" ./priv
diff --git a/flake.lock b/flake.lock
index 748cbea27..28e3fde23 100644
--- a/flake.lock
+++ b/flake.lock
@@ -56,11 +56,11 @@
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1736701207,
-        "narHash": "sha256-jG/+MvjVY7SlTakzZ2fJ5dC3V1PrKKrUEOEE30jrOKA=",
+        "lastModified": 1741246872,
+        "narHash": "sha256-Q6pMP4a9ed636qilcYX8XUguvKl/0/LGXhHcRI91p0U=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "ed4a395ea001367c1f13d34b1e01aa10290f67d6",
+        "rev": "10069ef4cf863633f57238f179a0297de84bd8d3",
         "type": "github"
       },
       "original": {