diff --git a/flake.lock b/flake.lock
index c4f6763..58c8b73 100644
--- a/flake.lock
+++ b/flake.lock
@@ -293,6 +293,22 @@
         "type": "github"
       }
     },
+    "nixpkgs_5": {
+      "locked": {
+        "lastModified": 1786599213,
+        "narHash": "sha256-yNJd40f11EzXBjSByCB7IPpeFFAdeoSKKM67dGkfFoU=",
+        "owner": "nixos",
+        "repo": "nixpkgs",
+        "rev": "0e251e24a4f24e036a084b6b4b2d2491af4167f4",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nixos",
+        "ref": "nixos-unstable",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
     "nur": {
       "inputs": {
         "flake-parts": [
@@ -462,9 +478,7 @@
         "home-manager": [
           "home-manager"
         ],
-        "nixpkgs": [
-          "nixpkgs"
-        ]
+        "nixpkgs": "nixpkgs_5"
       },
       "locked": {
         "lastModified": 1786843091,
diff --git a/flake.nix b/flake.nix
index 65128d2..b8a70b2 100644
--- a/flake.nix
+++ b/flake.nix
@@ -10,10 +10,8 @@
 
     zen-browser = {
       url = "github:0xc000022070/zen-browser-flake";
-      inputs = {
-        nixpkgs.follows = "nixpkgs";
-        home-manager.follows = "home-manager";
-      };
+      # no nixpkgs.follows: zen needs ffmpeg_9, only in unstable
+      inputs.home-manager.follows = "home-manager";
     };
 
     nix-cachyos-kernel.url = "github:xddxdd/nix-cachyos-kernel/release";