diff --git a/modules/home/utils/helix-languages.nix b/modules/home/utils/helix-languages.nix
index b7f6196..5c75437 100644
--- a/modules/home/utils/helix-languages.nix
+++ b/modules/home/utils/helix-languages.nix
@@ -13,5 +13,19 @@
     indent = { tab-width = 8; unit = " "; };
     roots = [];
     file-types = ["S"];
+  } {
+    name = "json";
+    auto-format = true;
+    formatter = { command = "prettier"; args = ["--parser" "json"]; };
+  } {
+    name = "jsonc";
+    auto-format = true;
+    formatter.command = "prettier";
+    formatter.args = ["--parser" "jsonc"];
+  } {
+    name = "c";
+    auto-format = true;
+    formatter = { command = "clang-format"; args = ["-style=file"]; };
+    indent = { tab-width = 8; unit = " "; };
   }];
 }