diff --git a/modules/home/firefox.nix b/modules/home/firefox.nix
index 8896ad9..562bcea 100644
--- a/modules/home/firefox.nix
+++ b/modules/home/firefox.nix
@@ -116,6 +116,17 @@
             iconMapObj."64" = "https://chatgpt.com/favicon.ico";
             definedAliases = [ "@gpt" ];
           };
+          surugaya = {
+            name = "Surugaya";
+            urls = [
+              {
+                template = "https://www.suruga-ya.jp/search?search_word={searchTerms}";
+              }
+            ];
+            iconMapObj."32" =
+              "https://www.suruga-ya.jp/drupal/themes/surugaya_mobile/images/pwa/images/icons/favicon-32x32.png";
+            definedAliases = [ "@suru" ];
+          };
         };
       };
       settings = {
diff --git a/modules/home/vscode.nix b/modules/home/vscode.nix
index e61bb96..71bf5e0 100644
--- a/modules/home/vscode.nix
+++ b/modules/home/vscode.nix
@@ -78,6 +78,9 @@
           };
 
           # Svelte
+          "[svelte]" = {
+            "editor.defaultFormatter" = "svelte.svelte-vscode";
+          };
           "svelte.enable-ts-plugin" = true;
 
           # C / C++
diff --git a/modules/system/user.nix b/modules/system/user.nix
index cc9b44d..c781c93 100644
--- a/modules/system/user.nix
+++ b/modules/system/user.nix
@@ -23,7 +23,7 @@
       programs.home-manager.enable = true;
     };
 
-    backupFileExtension = "backup11";
+    backupFileExtension = "backup18";
   };
 
   users.mutableUsers = false;