diff --git a/config.json b/config.json
index e691f6f..07466fd 100644
--- a/config.json
+++ b/config.json
@@ -899,7 +899,7 @@
         "uuid": "fb9758db-359a-4839-b37e-7a462906846a",
         "practices": [],
         "prerequisites": [],
-        "difficulty": 1
+        "difficulty": 4
       }
     ],
     "foregone": [
diff --git a/exercises/practice/ledger/.meta/example.cairo b/exercises/practice/ledger/.meta/example.cairo
index 0987996..90bfe0e 100644
--- a/exercises/practice/ledger/.meta/example.cairo
+++ b/exercises/practice/ledger/.meta/example.cairo
@@ -50,7 +50,6 @@ pub struct Entry {
     pub amount_in_cents: i32,
 }
 
-
 pub fn format_entries(
     currency: Currency, locale: Locale, entries: Array<Entry>,
 ) -> Array<ByteArray> {
diff --git a/exercises/practice/ledger/tests/ledger.cairo b/exercises/practice/ledger/tests/ledger.cairo
index 2635c13..19077be 100644
--- a/exercises/practice/ledger/tests/ledger.cairo
+++ b/exercises/practice/ledger/tests/ledger.cairo
@@ -151,7 +151,6 @@ fn dutch_locale_and_euros() {
     assert_eq!(result, expected);
 }
 
-
 #[test]
 #[ignore]
 fn dutch_negative_number_with_3_digits_before_decimal_point() {