diff --git a/flake.lock b/flake.lock
index 4999493..7c6a5a6 100644
--- a/flake.lock
+++ b/flake.lock
@@ -30,11 +30,11 @@
         ]
       },
       "locked": {
-        "lastModified": 1752689277,
-        "narHash": "sha256-uldUBFkZe/E7qbvxa3mH1ItrWZyT6w1dBKJQF/3ZSsc=",
+        "lastModified": 1763384566,
+        "narHash": "sha256-r+wgI+WvNaSdxQmqaM58lVNvJYJ16zoq+tKN20cLst4=",
         "owner": "nix-community",
         "repo": "naersk",
-        "rev": "0e72363d0938b0208d6c646d10649164c43f4d64",
+        "rev": "d4155d6ebb70fbe2314959842f744aa7cabbbf6a",
         "type": "github"
       },
       "original": {
@@ -45,11 +45,11 @@
     },
     "nix-filter": {
       "locked": {
-        "lastModified": 1731533336,
-        "narHash": "sha256-oRam5PS1vcrr5UPgALW0eo1m/5/pls27Z/pabHNy2Ms=",
+        "lastModified": 1757882181,
+        "narHash": "sha256-+cCxYIh2UNalTz364p+QYmWHs0P+6wDhiWR4jDIKQIU=",
         "owner": "numtide",
         "repo": "nix-filter",
-        "rev": "f7653272fd234696ae94229839a99b73c9ab7de0",
+        "rev": "59c44d1909c72441144b93cf0f054be7fe764de5",
         "type": "github"
       },
       "original": {
@@ -60,16 +60,16 @@
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1757545623,
-        "narHash": "sha256-mCxPABZ6jRjUQx3bPP4vjA68ETbPLNz9V2pk9tO7pRQ=",
+        "lastModified": 1764677808,
+        "narHash": "sha256-H3lC7knbXOBrHI9hITQ7modLuX20mYJVhZORL5ioms0=",
         "owner": "nixos",
         "repo": "nixpkgs",
-        "rev": "8cd5ce828d5d1d16feff37340171a98fc3bf6526",
+        "rev": "1aab89277eb2d87823d5b69bae631a2496cff57a",
         "type": "github"
       },
       "original": {
         "owner": "nixos",
-        "ref": "nixos-25.05",
+        "ref": "nixos-25.11",
         "repo": "nixpkgs",
         "type": "github"
       }
@@ -78,7 +78,8 @@
       "inputs": {
         "naersk": "naersk",
         "nix-filter": "nix-filter",
-        "nixpkgs": "nixpkgs"
+        "nixpkgs": "nixpkgs",
+        "treefmt-nix": "treefmt-nix"
       }
     },
     "rust-analyzer-src": {
@@ -97,6 +98,26 @@
         "repo": "rust-analyzer",
         "type": "github"
       }
+    },
+    "treefmt-nix": {
+      "inputs": {
+        "nixpkgs": [
+          "nixpkgs"
+        ]
+      },
+      "locked": {
+        "lastModified": 1762938485,
+        "narHash": "sha256-AlEObg0syDl+Spi4LsZIBrjw+snSVU4T8MOeuZJUJjM=",
+        "owner": "numtide",
+        "repo": "treefmt-nix",
+        "rev": "5b4ee75aeefd1e2d5a1cc43cf6ba65eba75e83e4",
+        "type": "github"
+      },
+      "original": {
+        "owner": "numtide",
+        "repo": "treefmt-nix",
+        "type": "github"
+      }
     }
   },
   "root": "root",
diff --git a/flake.nix b/flake.nix
index 0586565..fea0f90 100644
--- a/flake.nix
+++ b/flake.nix
@@ -2,12 +2,16 @@
   description = "Flake for command line interface of the ServicePoint display.";
 
   inputs = {
-    nixpkgs.url = "github:nixos/nixpkgs/nixos-25.05";
+    nixpkgs.url = "github:nixos/nixpkgs/nixos-25.11";
     nix-filter.url = "github:numtide/nix-filter";
     naersk = {
       url = "github:nix-community/naersk";
       inputs.nixpkgs.follows = "nixpkgs";
     };
+    treefmt-nix = {
+      url = "github:numtide/treefmt-nix";
+      inputs.nixpkgs.follows = "nixpkgs";
+    };
   };
 
   outputs =
@@ -16,9 +20,18 @@
       nixpkgs,
       naersk,
       nix-filter,
+      treefmt-nix,
     }:
     let
       lib = nixpkgs.lib;
+      treefmt-config = {
+        projectRootFile = "flake.nix";
+        programs = {
+          nixfmt.enable = true;
+          keep-sorted.enable = true;
+          rustfmt.enable = true;
+        };
+      };
       supported-systems = [
         "x86_64-linux"
         "aarch64-linux"
@@ -31,6 +44,7 @@
           system:
           f rec {
             pkgs = nixpkgs.legacyPackages.${system};
+            treefmt-eval = treefmt-nix.lib.evalModule pkgs treefmt-config;
             inherit system;
           }
         );
@@ -63,7 +77,7 @@
               [
                 xe
                 xz
-                ffmpeg-headless
+                ffmpeg_6-headless.dev
               ]
               ++ lib.optionals pkgs.stdenv.isLinux (
                 with pkgs;
@@ -120,6 +134,6 @@
         }
       );
 
-      formatter = forAllSystems ({ pkgs, ... }: pkgs.nixfmt-tree);
+      formatter = forAllSystems ({ treefmt-eval, ... }: treefmt-eval.config.build.wrapper);
     };
 }
diff --git a/src/image_processing.rs b/src/image_processing.rs
index 6e27cde..b8f06e8 100644
--- a/src/image_processing.rs
+++ b/src/image_processing.rs
@@ -164,9 +164,7 @@ impl ImageProcessingPipeline {
         let result = (width, height);
         trace!(
             "scaling {:?} to {:?} to fit {:?}",
-            source,
-            result,
-            self.render_size
+            source, result, self.render_size
         );
         result
     }
diff --git a/src/pixels.rs b/src/pixels.rs
index 3f9665d..a5c5368 100644
--- a/src/pixels.rs
+++ b/src/pixels.rs
@@ -92,7 +92,8 @@ fn pixels_video(
 ) {
     ffmpeg::init().unwrap();
 
-    let mut ictx = ffmpeg::format::input(&options.file_name).expect("failed to open video input file");
+    let mut ictx =
+        ffmpeg::format::input(&options.file_name).expect("failed to open video input file");
 
     let input = ictx
         .streams()
@@ -103,12 +104,14 @@ fn pixels_video(
 
     let context_decoder = ffmpeg::codec::context::Context::from_parameters(input.parameters())
         .expect("could not extract video context from parameters");
-    let mut decoder = context_decoder.decoder().video()
+    let mut decoder = context_decoder
+        .decoder()
+        .video()
         .expect("failed to create decoder for video stream");
 
     let src_width = decoder.width();
     let src_height = decoder.height();
-    
+
     let mut scaler = ffmpeg::software::scaling::Context::get(
         decoder.format(),
         src_width,
@@ -117,7 +120,8 @@ fn pixels_video(
         src_width,
         src_height,
         ffmpeg::software::scaling::Flags::BILINEAR,
-    ).expect("failed to create scaling context");
+    )
+    .expect("failed to create scaling context");
 
     let mut frame_index = 0;
 
@@ -128,14 +132,16 @@ fn pixels_video(
             let mut decoded = ffmpeg::util::frame::video::Video::empty();
             let mut rgb_frame = ffmpeg::util::frame::video::Video::empty();
             while decoder.receive_frame(&mut decoded).is_ok() {
-                scaler.run(&decoded, &mut rgb_frame)
+                scaler
+                    .run(&decoded, &mut rgb_frame)
                     .expect("failed to scale frame");
 
                 let image = RgbImage::from_raw(src_width, src_height, rgb_frame.data(0).to_owned())
                     .expect("could not read rgb data to image");
                 let image = DynamicImage::from(image);
-                let bitmap= processing_pipeline.process(image);
-                connection.send_command(BitmapCommand::from(bitmap))
+                let bitmap = processing_pipeline.process(image);
+                connection
+                    .send_command(BitmapCommand::from(bitmap))
                     .expect("failed to send image command");
 
                 frame_index += 1;
@@ -145,13 +151,13 @@ fn pixels_video(
 
     for (stream, packet) in ictx.packets() {
         if stream.index() == video_stream_index {
-            decoder.send_packet(&packet)
+            decoder
+                .send_packet(&packet)
                 .expect("failed to send video packet");
             receive_and_process_decoded_frames(&mut decoder)
                 .expect("failed to process video packet");
         }
     }
     decoder.send_eof().expect("failed to send eof");
-    receive_and_process_decoded_frames(&mut decoder)
-        .expect("failed to eof packet");
+    receive_and_process_decoded_frames(&mut decoder).expect("failed to eof packet");
 }
diff --git a/src/stream_stdin.rs b/src/stream_stdin.rs
index 872461c..ac744fd 100644
--- a/src/stream_stdin.rs
+++ b/src/stream_stdin.rs
@@ -4,7 +4,9 @@ use servicepoint::*;
 use std::thread::sleep;
 
 pub(crate) fn stream_stdin(connection: &Transport, slow: bool) {
-    warn!("This mode will break when using multi-byte characters and does not support ANSI escape sequences yet.");
+    warn!(
+        "This mode will break when using multi-byte characters and does not support ANSI escape sequences yet."
+    );
     let mut app = App {
         connection,
         mirror: CharGrid::new(TILE_WIDTH, TILE_HEIGHT),
diff --git a/src/stream_window.rs b/src/stream_window.rs
index ffbc717..46545d9 100644
--- a/src/stream_window.rs
+++ b/src/stream_window.rs
@@ -7,10 +7,10 @@ use image::{DynamicImage, ImageBuffer, Rgb, Rgba};
 use log::{debug, error, info, trace, warn};
 use scap::{
     capturer::{Capturer, Options},
-    frame::convert_bgra_to_rgb,
     frame::Frame,
+    frame::convert_bgra_to_rgb,
 };
-use servicepoint::{BitmapCommand, CompressionCode, Origin, FRAME_PACING};
+use servicepoint::{BitmapCommand, CompressionCode, FRAME_PACING, Origin};
 use std::time::{Duration, Instant};
 
 pub fn stream_window(