diff --git a/flake.lock b/flake.lock
index efb924c..24e2e0b 100644
--- a/flake.lock
+++ b/flake.lock
@@ -5,14 +5,16 @@
         "nixpkgs": [
           "nixpkgs"
         ],
-        "nixpkgs-stable": "nixpkgs-stable"
+        "nixpkgs-stable": [
+          "nixpkgs"
+        ]
       },
       "locked": {
-        "lastModified": 1745483009,
-        "narHash": "sha256-nMSo37sprHHbK7uYAw5IwVbQ/qqB9piMh8IGH77EqSk=",
+        "lastModified": 1747931129,
+        "narHash": "sha256-kiZHNTbdMRdKFZlBcx1PI5hBu8Hounl/JQdueAoufqM=",
         "owner": "nix-community",
         "repo": "emacs-overlay",
-        "rev": "acf94b5dd33ce8e3fb995421cd1a719bb0d9c804",
+        "rev": "67fa10fdfd0e958dceb60ce893956aad1ed6bce4",
         "type": "github"
       },
       "original": {
@@ -38,32 +40,16 @@
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1745391562,
-        "narHash": "sha256-sPwcCYuiEopaafePqlG826tBhctuJsLx/mhKKM5Fmjo=",
+        "lastModified": 1747825515,
+        "narHash": "sha256-BWpMQymVI73QoKZdcVCxUCCK3GNvr/xa2Dc4DM1o2BE=",
         "owner": "nixos",
         "repo": "nixpkgs",
-        "rev": "8a2f738d9d1f1d986b5a4cd2fd2061a7127237d7",
+        "rev": "cd2812de55cf87df88a9e09bf3be1ce63d50c1a6",
         "type": "github"
       },
       "original": {
         "owner": "nixos",
-        "ref": "nixos-unstable",
-        "repo": "nixpkgs",
-        "type": "github"
-      }
-    },
-    "nixpkgs-stable": {
-      "locked": {
-        "lastModified": 1745279238,
-        "narHash": "sha256-AQ7M9wTa/Pa/kK5pcGTgX/DGqMHyzsyINfN7ktsI7Fo=",
-        "owner": "NixOS",
-        "repo": "nixpkgs",
-        "rev": "9684b53175fc6c09581e94cc85f05ab77464c7e3",
-        "type": "github"
-      },
-      "original": {
-        "owner": "NixOS",
-        "ref": "nixos-24.11",
+        "ref": "nixos-25.05",
         "repo": "nixpkgs",
         "type": "github"
       }
diff --git a/flake.nix b/flake.nix
index 1c2e5ff..81141f5 100644
--- a/flake.nix
+++ b/flake.nix
@@ -6,9 +6,10 @@
     extra-trusted-public-keys = ["nix-community.cachix.org-1:mB9FSh9qf2dCimDSUo8Zy7bkq5CX+/rkCWyvRCYg3Fs="];
   };
   inputs = {
-    nixpkgs.url = "github:nixos/nixpkgs?ref=nixos-unstable";
+    nixpkgs.url = "github:nixos/nixpkgs?ref=nixos-25.05";
     emacs-overlay.url = "github:nix-community/emacs-overlay";
     emacs-overlay.inputs.nixpkgs.follows = "nixpkgs";
+    emacs-overlay.inputs.nixpkgs-stable.follows = "nixpkgs";
     nix-org-babel.url = "github:emacs-twist/org-babel";
   };