diff --git a/.github/workflows/sorted.yml b/.github/workflows/sorted.yml
new file mode 100644
index 0000000..6b2af9e
--- /dev/null
+++ b/.github/workflows/sorted.yml
@@ -0,0 +1,16 @@
+name: Exercise order
+
+on:
+  pull_request:
+    branches:
+      - main
+
+permissions:
+  contents: read
+
+jobs:
+  call-gha-workflow:
+    name: Check
+    uses: exercism/github-actions/.github/workflows/sorted.yml@main
+    with:
+      ordering: ".difficulty, .lowercase_name"
diff --git a/config.json b/config.json
index 17d3d1d..e0fad3a 100644
--- a/config.json
+++ b/config.json
@@ -614,29 +614,29 @@
         ]
       },
       {
-        "slug": "matching-brackets",
-        "name": "Matching Brackets",
-        "uuid": "5afbe74a-af64-4558-938b-d075bc4d1f61",
+        "slug": "luhn",
+        "name": "Luhn",
+        "uuid": "989aaedc-4836-4d75-8579-0ac177c58120",
         "practices": [],
         "prerequisites": [],
         "difficulty": 5,
         "topics": [
-          "conditionals",
-          "looping",
-          "strings"
+          "algorithms",
+          "strings",
+          "transforming"
         ]
       },
       {
-        "slug": "luhn",
-        "name": "Luhn",
-        "uuid": "989aaedc-4836-4d75-8579-0ac177c58120",
+        "slug": "matching-brackets",
+        "name": "Matching Brackets",
+        "uuid": "5afbe74a-af64-4558-938b-d075bc4d1f61",
         "practices": [],
         "prerequisites": [],
         "difficulty": 5,
         "topics": [
-          "algorithms",
-          "strings",
-          "transforming"
+          "conditionals",
+          "looping",
+          "strings"
         ]
       },
       {
@@ -716,4 +716,4 @@
     "used_for/mobile",
     "used_for/guis"
   ]
-}
\ No newline at end of file
+}