diff --git a/dev/treefmt.nix b/dev/treefmt.nix
index e158d5b..541e327 100644
--- a/dev/treefmt.nix
+++ b/dev/treefmt.nix
@@ -31,6 +31,11 @@
     };
 
     prettier = {
+      options = [
+        "--write"
+        "--prose-wrap"
+        "never"
+      ];
       excludes = [
         "secrets.yaml"
       ];