diff --git a/config.json b/config.json
index ccd92bdc..79012a38 100644
--- a/config.json
+++ b/config.json
@@ -582,6 +582,14 @@
           "strings"
         ]
       },
+      {
+        "slug": "line-up",
+        "name": "Line Up",
+        "uuid": "cb7d3d70-185d-47cb-b8b7-a0f6ce1c0cf5",
+        "practices": [],
+        "prerequisites": [],
+        "difficulty": 4
+      },
       {
         "slug": "matching-brackets",
         "name": "Matching Brackets",
@@ -810,10 +818,10 @@
         "practices": [],
         "prerequisites": [],
         "difficulty": 5,
+        "status": "deprecated",
         "topics": [
           "control_flow_loops"
-        ],
-        "status": "deprecated"
+        ]
       },
       {
         "slug": "nucleotide-count",
diff --git a/exercises/practice/line-up/.docs/instructions.md b/exercises/practice/line-up/.docs/instructions.md
new file mode 100644
index 00000000..fb41d4cb
--- /dev/null
+++ b/exercises/practice/line-up/.docs/instructions.md
@@ -0,0 +1,19 @@
+# Instructions
+
+Given a name and a number, your task is to produce a sentence using that name and that number as an [ordinal numeral][ordinal-numeral].
+Yaʻqūb expects to use numbers from 1 up to 999.
+
+Rules:
+
+- Numbers ending in 1 (except for 11) → `"st"`
+- Numbers ending in 2 (except for 12) → `"nd"`
+- Numbers ending in 3 (except for 13) → `"rd"`
+- All other numbers → `"th"`
+
+Examples:
+
+- `"Mary", 1` → `"Mary, you are the 1st customer we serve today. Thank you!"`
+- `"John", 12` → `"John, you are the 12th customer we serve today. Thank you!"`
+- `"Dahir", 162` → `"Dahir, you are the 162nd customer we serve today. Thank you!"`
+
+[ordinal-numeral]: https://en.wikipedia.org/wiki/Ordinal_numeral
diff --git a/exercises/practice/line-up/.docs/introduction.md b/exercises/practice/line-up/.docs/introduction.md
new file mode 100644
index 00000000..ea07268a
--- /dev/null
+++ b/exercises/practice/line-up/.docs/introduction.md
@@ -0,0 +1,7 @@
+# Introduction
+
+Your friend Yaʻqūb works the counter at a deli in town, slicing, weighing, and wrapping orders for a line of hungry customers that gets longer every day.
+Waiting customers are starting to lose track of who is next, so he wants numbered tickets they can use to track the order in which they arrive.
+
+To make the customers feel special, he does not want the ticket to have only a number on it.
+They shall get a proper English sentence with their name and number on it.
diff --git a/exercises/practice/line-up/.meta/config.json b/exercises/practice/line-up/.meta/config.json
new file mode 100644
index 00000000..c490a517
--- /dev/null
+++ b/exercises/practice/line-up/.meta/config.json
@@ -0,0 +1,19 @@
+{
+  "authors": [
+    "keiravillekode"
+  ],
+  "files": {
+    "solution": [
+      "line-up.el"
+    ],
+    "test": [
+      "line-up-test.el"
+    ],
+    "example": [
+      ".meta/example.el"
+    ]
+  },
+  "blurb": "Help lining up customers at Yaʻqūb's Deli.",
+  "source": "mk-mxp, based on previous work from Exercism contributors codedge and neenjaw",
+  "source_url": "https://forum.exercism.org/t/new-exercise-ordinal-numbers/19147"
+}
diff --git a/exercises/practice/line-up/.meta/example.el b/exercises/practice/line-up/.meta/example.el
new file mode 100644
index 00000000..13da448b
--- /dev/null
+++ b/exercises/practice/line-up/.meta/example.el
@@ -0,0 +1,29 @@
+;;; line-up.el --- Line Up (exercism)  -*- lexical-binding: t; -*-
+
+;;; Commentary:
+
+;;; Code:
+
+
+(defun suffix (number)
+  (let ((units (mod number 10))
+        (tens (mod (/ number 10) 10)))
+    (cond ((= tens 1) "th")
+          ((= units 1) "st")
+          ((= units 2) "nd")
+          ((= units 3) "rd")
+          (t "th"))))
+
+
+(defun ticket (name number)
+  (concat
+    name
+    ", you are the "
+    (number-to-string number)
+    (suffix number)
+    " customer we serve today. Thank you!"))
+
+
+(provide 'line-up)
+;;; line-up.el ends here
+
diff --git a/exercises/practice/line-up/.meta/tests.toml b/exercises/practice/line-up/.meta/tests.toml
new file mode 100644
index 00000000..36fdf1d0
--- /dev/null
+++ b/exercises/practice/line-up/.meta/tests.toml
@@ -0,0 +1,67 @@
+# This is an auto-generated file.
+#
+# Regenerating this file via `configlet sync` will:
+# - Recreate every `description` key/value pair
+# - Recreate every `reimplements` key/value pair, where they exist in problem-specifications
+# - Remove any `include = true` key/value pair (an omitted `include` key implies inclusion)
+# - Preserve any other key/value pair
+#
+# As user-added comments (using the # character) will be removed when this file
+# is regenerated, comments can be added via a `comment` key.
+
+[7760d1b8-4864-4db4-953b-0fa7c047dbc0]
+description = "format smallest non-exceptional ordinal numeral 4"
+
+[e8b7c715-6baa-4f7b-8fb3-2fa48044ab7a]
+description = "format greatest single digit non-exceptional ordinal numeral 9"
+
+[f370aae9-7ae7-4247-90ce-e8ff8c6934df]
+description = "format non-exceptional ordinal numeral 5"
+
+[37f10dea-42a2-49de-bb92-0b690b677908]
+description = "format non-exceptional ordinal numeral 6"
+
+[d8dfb9a2-3a1f-4fee-9dae-01af3600054e]
+description = "format non-exceptional ordinal numeral 7"
+
+[505ec372-1803-42b1-9377-6934890fd055]
+description = "format non-exceptional ordinal numeral 8"
+
+[8267072d-be1f-4f70-b34a-76b7557a47b9]
+description = "format exceptional ordinal numeral 1"
+
+[4d8753cb-0364-4b29-84b8-4374a4fa2e3f]
+description = "format exceptional ordinal numeral 2"
+
+[8d44c223-3a7e-4f48-a0ca-78e67bf98aa7]
+description = "format exceptional ordinal numeral 3"
+
+[6c4f6c88-b306-4f40-bc78-97cdd583c21a]
+description = "format smallest two digit non-exceptional ordinal numeral 10"
+
+[e257a43f-d2b1-457a-97df-25f0923fc62a]
+description = "format non-exceptional ordinal numeral 11"
+
+[bb1db695-4d64-457f-81b8-4f5a2107e3f4]
+description = "format non-exceptional ordinal numeral 12"
+
+[60a3187c-9403-4835-97de-4f10ebfd63e2]
+description = "format non-exceptional ordinal numeral 13"
+
+[2bdcebc5-c029-4874-b6cc-e9bec80d603a]
+description = "format exceptional ordinal numeral 21"
+
+[74ee2317-0295-49d2-baf0-d56bcefa14e3]
+description = "format exceptional ordinal numeral 62"
+
+[b37c332d-7f68-40e3-8503-e43cbd67a0c4]
+description = "format exceptional ordinal numeral 100"
+
+[0375f250-ce92-4195-9555-00e28ccc4d99]
+description = "format exceptional ordinal numeral 101"
+
+[0d8a4974-9a8a-45a4-aca7-a9fb473c9836]
+description = "format non-exceptional ordinal numeral 112"
+
+[06b62efe-199e-4ce7-970d-4bf73945713f]
+description = "format exceptional ordinal numeral 123"
diff --git a/exercises/practice/line-up/line-up-test.el b/exercises/practice/line-up/line-up-test.el
new file mode 100644
index 00000000..d9e5eb09
--- /dev/null
+++ b/exercises/practice/line-up/line-up-test.el
@@ -0,0 +1,108 @@
+;;; line-up-test.el --- Line Up (exercism)  -*- lexical-binding: t; -*-
+
+;;; Commentary:
+
+;;; Code:
+
+
+(load-file "line-up.el")
+(declare-function ticket "line-up.el" (name number))
+
+
+(ert-deftest format-smallest-non-exceptional-ordinal-numeral-4 ()
+  (should (string= "Gianna, you are the 4th customer we serve today. Thank you!"
+                   (ticket "Gianna" 4))))
+
+
+(ert-deftest format-greatest-single-digit-non-exceptional-ordinal-numeral-9 ()
+  (should (string= "Maarten, you are the 9th customer we serve today. Thank you!"
+                   (ticket "Maarten" 9))))
+
+
+(ert-deftest format-non-exceptional-ordinal-numeral-5 ()
+  (should (string= "Petronila, you are the 5th customer we serve today. Thank you!"
+                   (ticket "Petronila" 5))))
+
+
+(ert-deftest format-non-exceptional-ordinal-numeral-6 ()
+  (should (string= "Attakullakulla, you are the 6th customer we serve today. Thank you!"
+                   (ticket "Attakullakulla" 6))))
+
+
+(ert-deftest format-non-exceptional-ordinal-numeral-7 ()
+  (should (string= "Kate, you are the 7th customer we serve today. Thank you!"
+                   (ticket "Kate" 7))))
+
+
+(ert-deftest format-non-exceptional-ordinal-numeral-8 ()
+  (should (string= "Maximiliano, you are the 8th customer we serve today. Thank you!"
+                   (ticket "Maximiliano" 8))))
+
+
+(ert-deftest format-exceptional-ordinal-numeral-1 ()
+  (should (string= "Mary, you are the 1st customer we serve today. Thank you!"
+                   (ticket "Mary" 1))))
+
+
+(ert-deftest format-exceptional-ordinal-numeral-2 ()
+  (should (string= "Haruto, you are the 2nd customer we serve today. Thank you!"
+                   (ticket "Haruto" 2))))
+
+
+(ert-deftest format-exceptional-ordinal-numeral-3 ()
+  (should (string= "Henriette, you are the 3rd customer we serve today. Thank you!"
+                   (ticket "Henriette" 3))))
+
+
+(ert-deftest format-smallest-two-digit-non-exceptional-ordinal-numeral-10 ()
+  (should (string= "Alvarez, you are the 10th customer we serve today. Thank you!"
+                   (ticket "Alvarez" 10))))
+
+
+(ert-deftest format-non-exceptional-ordinal-numeral-11 ()
+  (should (string= "Jacqueline, you are the 11th customer we serve today. Thank you!"
+                   (ticket "Jacqueline" 11))))
+
+
+(ert-deftest format-non-exceptional-ordinal-numeral-12 ()
+  (should (string= "Juan, you are the 12th customer we serve today. Thank you!"
+                   (ticket "Juan" 12))))
+
+
+(ert-deftest format-non-exceptional-ordinal-numeral-13 ()
+  (should (string= "Patricia, you are the 13th customer we serve today. Thank you!"
+                   (ticket "Patricia" 13))))
+
+
+(ert-deftest format-exceptional-ordinal-numeral-21 ()
+  (should (string= "Washi, you are the 21st customer we serve today. Thank you!"
+                   (ticket "Washi" 21))))
+
+
+(ert-deftest format-exceptional-ordinal-numeral-62 ()
+  (should (string= "Nayra, you are the 62nd customer we serve today. Thank you!"
+                   (ticket "Nayra" 62))))
+
+
+(ert-deftest format-exceptional-ordinal-numeral-100 ()
+  (should (string= "John, you are the 100th customer we serve today. Thank you!"
+                   (ticket "John" 100))))
+
+
+(ert-deftest format-exceptional-ordinal-numeral-101 ()
+  (should (string= "Zeinab, you are the 101st customer we serve today. Thank you!"
+                   (ticket "Zeinab" 101))))
+
+
+(ert-deftest format-non-exceptional-ordinal-numeral-112 ()
+  (should (string= "Knud, you are the 112th customer we serve today. Thank you!"
+                   (ticket "Knud" 112))))
+
+
+(ert-deftest format-exceptional-ordinal-numeral-123 ()
+  (should (string= "Yma, you are the 123rd customer we serve today. Thank you!"
+                   (ticket "Yma" 123))))
+
+
+(provide 'line-up-test)
+;;; line-up-test.el ends here
diff --git a/exercises/practice/line-up/line-up.el b/exercises/practice/line-up/line-up.el
new file mode 100644
index 00000000..3bf8cb29
--- /dev/null
+++ b/exercises/practice/line-up/line-up.el
@@ -0,0 +1,14 @@
+;;; line-up.el --- Line Up (exercism)  -*- lexical-binding: t; -*-
+
+;;; Commentary:
+
+;;; Code:
+
+
+(defun ticket (name number)
+  (error "Delete this S-Expression and write your own implementation"))
+
+
+(provide 'line-up)
+;;; line-up.el ends here
+