diff --git a/config.json b/config.json
index 0e7fe178..927760bc 100644
--- a/config.json
+++ b/config.json
@@ -36,26 +36,27 @@
       ]
     },
     {
-      "slug": "bowling",
-      "difficulty": 6,
+      "slug": "bank-account",
+      "difficulty": 2,
       "topics": [
-        "Algorithms",
-        "Control-flow (loops)"
+        "Classes"
       ]
     },
     {
-      "slug": "allergies",
-      "difficulty": 4,
+      "slug": "nucleotide-count",
+      "difficulty": 2,
       "topics": [
-        "Bitwise operations",
-        "Filtering"
+        "Dictionaries",
+        "Strings"
       ]
     },
     {
-      "slug": "bank-account",
+      "slug": "etl",
       "difficulty": 2,
       "topics": [
-        "Classes"
+        "Dictionaries",
+        "Lists",
+        "Transforming"
       ]
     },
     {
@@ -74,10 +75,6 @@
         "Transforming"
       ]
     },
-    {
-	  "slug": "book-store",
-	  "difficulty": 6
-	},
     {
       "slug": "perfect-numbers",
       "difficulty": 3,
@@ -85,23 +82,6 @@
         "Integers"
       ]
     },
-    {
-      "slug": "nucleotide-count",
-      "difficulty": 2,
-      "topics": [
-        "Dictionaries",
-        "Strings"
-      ]
-    },
-    {
-      "slug": "etl",
-      "difficulty": 2,
-      "topics": [
-        "Dictionaries",
-        "Lists",
-        "Transforming"
-      ]
-    },
     {
       "slug": "binary-search",
       "difficulty": 3,
@@ -120,11 +100,11 @@
       ]
     },
     {
-      "slug": "circular-buffer",
-      "difficulty": 5,
+      "slug": "allergies",
+      "difficulty": 4,
       "topics": [
-        "Queues",
-        "Classes"
+        "Bitwise operations",
+        "Filtering"
       ]
     },
     {
@@ -135,7 +115,27 @@
         "Arrays",
         "Tuples"
       ]
-    }
+    },
+    {
+      "slug": "circular-buffer",
+      "difficulty": 5,
+      "topics": [
+        "Queues",
+        "Classes"
+      ]
+    },
+    {
+      "slug": "bowling",
+      "difficulty": 6,
+      "topics": [
+        "Algorithms",
+        "Control-flow (loops)"
+      ]
+    },
+    {
+	  "slug": "book-store",
+	  "difficulty": 6
+	}
   ],
   "ignored": [
     "bin",