diff --git a/flake.lock b/flake.lock
index 33c7ddba..505f2aec 100644
--- a/flake.lock
+++ b/flake.lock
@@ -5,11 +5,11 @@
         "systems": "systems"
       },
       "locked": {
-        "lastModified": 1681202837,
-        "narHash": "sha256-H+Rh19JDwRtpVPAWp64F+rlEtxUWBAQW28eAi3SRSzg=",
+        "lastModified": 1692799911,
+        "narHash": "sha256-3eihraek4qL744EvQXsK1Ha6C3CR7nnT8X2qWap4RNk=",
         "owner": "numtide",
         "repo": "flake-utils",
-        "rev": "cfacdce06f30d2b68473a46042957675eebb3401",
+        "rev": "f9e7cf818399d17d347f847525c5a5a8032e4e44",
         "type": "github"
       },
       "original": {
@@ -20,11 +20,11 @@
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1681753173,
-        "narHash": "sha256-MrGmzZWLUqh2VstoikKLFFIELXm/lsf/G9U9zR96VD4=",
+        "lastModified": 1693355128,
+        "narHash": "sha256-+ZoAny3ZxLcfMaUoLVgL9Ywb/57wP+EtsdNGuXUJrwg=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "0a4206a51b386e5cda731e8ac78d76ad924c7125",
+        "rev": "a63a64b593dcf2fe05f7c5d666eb395950f36bc9",
         "type": "github"
       },
       "original": {
diff --git a/hscontrol/assets/oidc_callback_template.html b/hscontrol/assets/oidc_callback_template.html
index 47928c4e..2236f365 100644
--- a/hscontrol/assets/oidc_callback_template.html
+++ b/hscontrol/assets/oidc_callback_template.html
@@ -1,4 +1,4 @@
-<!DOCTYPE html>
+<!doctype html>
 <html lang="en">
   <head>
     <meta charset="UTF-8" />
@@ -7,9 +7,19 @@
     <style>
       body {
         font-size: 14px;
-        font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
-          "Roboto", "Oxygen", "Ubuntu", "Cantarell", "Fira Sans", "Droid Sans",
-          "Helvetica Neue", sans-serif;
+        font-family:
+          system-ui,
+          -apple-system,
+          BlinkMacSystemFont,
+          "Segoe UI",
+          "Roboto",
+          "Oxygen",
+          "Ubuntu",
+          "Cantarell",
+          "Fira Sans",
+          "Droid Sans",
+          "Helvetica Neue",
+          sans-serif;
       }
 
       hr {
diff --git a/hscontrol/templates/apple.html b/hscontrol/templates/apple.html
index 3643e5fb..4064dced 100644
--- a/hscontrol/templates/apple.html
+++ b/hscontrol/templates/apple.html
@@ -1,4 +1,4 @@
-<!DOCTYPE html>
+<!doctype html>
 <html lang="en">
   <head>
     <meta charset="UTF-8" />
diff --git a/hscontrol/templates/windows.html b/hscontrol/templates/windows.html
index db9315ef..c590494f 100644
--- a/hscontrol/templates/windows.html
+++ b/hscontrol/templates/windows.html
@@ -1,4 +1,4 @@
-<!DOCTYPE html>
+<!doctype html>
 <html lang="en">
   <head>
     <meta charset="UTF-8" />
