diff --git a/README.md b/README.md
index 8a553cc..243958e 100644
--- a/README.md
+++ b/README.md
@@ -6,15 +6,19 @@ Backend code for [demos.tf](https://demos.tf)
 
 ## Database
 
-The api requires a PostgreSQL database to function, the database schema required can be found in [demostf/db](https://github.com/demostf/api)/`demos_schema.sql`.
+The api requires a PostgreSQL database to function, the database schema required
+can be found in [demostf/db](https://github.com/demostf/api)/`demos_schema.sql`.
 
 Note that the `pg_trgrm` extension in required.
 
 ## Docker image
 
-A prebuild docker image exists in the [docker hub](https://hub.docker.com/r/demostf/api/) which contains nginx, php and this code.
+A prebuild docker image exists in the
+[docker hub](https://hub.docker.com/r/demostf/api/) which contains nginx, php
+and this code.
 
-A separate PostgreSQL database is required to run the image, the database details need to be configured with the following environment variables:
+A separate PostgreSQL database is required to run the image, the database
+details need to be configured with the following environment variables:
 
 - DB_TYPE=pgsql
 - DB_HOST=$database_host
@@ -24,7 +28,8 @@ A separate PostgreSQL database is required to run the image, the database detail
 - BASE_HOST=$host // the domain the frontend site will be running on
 - PARSER_URL=$parser_host // the full url for the demo parser's upload endpoint
 - DEMO_ROOT=/demos // the folder uploaded demos will be stored in
-- DEMO_HOST=static.$HOST // the hostname from which the uploaded demos will be served
+- DEMO_HOST=static.$HOST // the hostname from which the uploaded demos will be
+  served
 - APP_ROOT=api.$HOST // the domain the api will be running on
 
 ## Installing
@@ -37,10 +42,12 @@ composer install
 
 ## Deploying
 
-Deploying the api requires php7.1 or later,
-the webserver needs to be configured to server all requests to `public/index.php` execept
-for request to `/upload` which needs to be handled by `public/upload.php`.
+Deploying the api requires php7.1 or later, the webserver needs to be configured
+to server all requests to `public/index.php` execept for request to `/upload`
+which needs to be handled by `public/upload.php`.
 
-The database details need to be configured with the same environment variables as are described for the docker image above.
+The database details need to be configured with the same environment variables
+as are described for the docker image above.
 
-More information for hosting and a pre-configured docker based setup can be found at [demostf/setup](https://github.com/demostf/setup)
+More information for hosting and a pre-configured docker based setup can be
+found at [demostf/setup](https://github.com/demostf/setup)
diff --git a/flake.lock b/flake.lock
index 1986bb1..20449f8 100644
--- a/flake.lock
+++ b/flake.lock
@@ -7,11 +7,11 @@
         ]
       },
       "locked": {
-        "lastModified": 1735562399,
-        "narHash": "sha256-CxgG+lj8QrPMukLuYGRVYqS63AngqhWFdoMoPIVMxQs=",
+        "lastModified": 1779722240,
+        "narHash": "sha256-cX1d9V5JHTytsSdH8RrgyU4fFdm4oooRuKBcJuiyI4U=",
         "owner": "nix-community",
         "repo": "flakelight",
-        "rev": "ee9170f71465e6d893a8eda0a6062546dc73a5da",
+        "rev": "6908ac68dd682d1cb22fdb9391b890798f083a48",
         "type": "github"
       },
       "original": {
@@ -22,16 +22,16 @@
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1748302896,
-        "narHash": "sha256-ixMT0a8mM091vSswlTORZj93WQAJsRNmEvqLL+qwTFM=",
+        "lastModified": 1780453794,
+        "narHash": "sha256-bXMRa9VTsHSPXL4Cw8R6JJLQeY3Y/IP4+YJCYVmQ7FY=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "7848cd8c982f7740edf76ddb3b43d234cb80fc4d",
+        "rev": "6b316287bae2ee04c9b93c8c858d930fd07d7338",
         "type": "github"
       },
       "original": {
         "id": "nixpkgs",
-        "ref": "nixos-25.05",
+        "ref": "nixos-26.05",
         "type": "indirect"
       }
     },
diff --git a/flake.nix b/flake.nix
index 5b88d10..ac67cea 100644
--- a/flake.nix
+++ b/flake.nix
@@ -1,6 +1,6 @@
 {
   inputs = {
-    nixpkgs.url = "nixpkgs/nixos-25.05";
+    nixpkgs.url = "nixpkgs/nixos-26.05";
     flakelight = {
       url = "github:nix-community/flakelight";
       inputs.nixpkgs.follows = "nixpkgs";
@@ -17,8 +17,8 @@
         parser = pkgs: pkgs.demostf-parser;
       };
       checks = {
-        integration-tests = pkgs: pkgs.nixosTest (import ./nix/integration-tests.nix);
-        unit-tests = pkgs: pkgs.nixosTest (import ./nix/unit-tests.nix);
+        integration-tests = pkgs: pkgs.testers.nixosTest (import ./nix/integration-tests.nix);
+        unit-tests = pkgs: pkgs.testers.nixosTest (import ./nix/unit-tests.nix);
       };
       formatters = pkgs: {
         "*.nix" = pkgs.lib.getExe pkgs.alejandra;