diff --git a/CHANGELOG.md b/CHANGELOG.md
index 7c32b50..996c208 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,6 +7,7 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 ## [Unreleased]
 ### Added
 - Garay numeral system
+- Medefaidrin numeral system
 ## [1.4] - 2026-02-16
 ### Added
 - Ahom numeral system
diff --git a/README.md b/README.md
index ba5b71c..2bb2787 100644
--- a/README.md
+++ b/README.md
@@ -161,6 +161,7 @@ It can automatically detect mixed numeral formats in a piece of text and convert
 - Tamil ★
 - Pahawh Hmong
 - Garay
+- Medefaidrin
 
 > ★ Non-positional numeral system
 
diff --git a/tests/test_conversion.py b/tests/test_conversion.py
index 5b2df6f..e89f1b0 100644
--- a/tests/test_conversion.py
+++ b/tests/test_conversion.py
@@ -18,7 +18,9 @@
     NumeralSystem.WANCHO,
     NumeralSystem.DIVES_AKURU,
     NumeralSystem.GARAY,
-    NumeralSystem.NYIAKENG_PUACHUE_HMONG]
+    NumeralSystem.NYIAKENG_PUACHUE_HMONG,
+    NumeralSystem.MEDEFAIDRIN,
+]
 
 CONVERSION_CASES = {
     NumeralSystem.ARABIC_INDIC: "٠١٢٣٤٥٦٧٨٩",
@@ -96,6 +98,7 @@
     NumeralSystem.TAMIL: "௦௧௨௩௪௫௬௭௮௯",
     NumeralSystem.PAHAWH_HMONG: "𖭐𖭑𖭒𖭓𖭔𖭕𖭖𖭗𖭘𖭙",
     NumeralSystem.GARAY: "𐵀𐵁𐵂𐵃𐵄𐵅𐵆𐵇𐵈𐵉",
+    NumeralSystem.MEDEFAIDRIN: "𖺀𖺁𖺂𖺃𖺄𖺅𖺆𖺇𖺈𖺉",
 }
 
 def test_numeral_system_length():
diff --git a/xnum/params.py b/xnum/params.py
index ed4104c..fdbfe2f 100644
--- a/xnum/params.py
+++ b/xnum/params.py
@@ -79,6 +79,7 @@
 TAMIL_DIGITS = ['௦', '௧', '௨', '௩', '௪', '௫', '௬', '௭', '௮', '௯']
 PAHAWH_HMONG_DIGITS = ['𖭐', '𖭑', '𖭒', '𖭓', '𖭔', '𖭕', '𖭖', '𖭗', '𖭘', '𖭙']
 GARAY_DIGITS = ['𐵀', '𐵁', '𐵂', '𐵃', '𐵄', '𐵅', '𐵆', '𐵇', '𐵈', '𐵉']
+MEDEFAIDRIN_DIGITS = ['𖺀', '𖺁', '𖺂', '𖺃', '𖺄', '𖺅', '𖺆', '𖺇', '𖺈', '𖺉']
 
 NUMERAL_MAPS = {
     "english": ENGLISH_DIGITS,
@@ -156,6 +157,7 @@
     "tamil": TAMIL_DIGITS,
     "pahawh_hmong": PAHAWH_HMONG_DIGITS,
     "garay": GARAY_DIGITS,
+    "medefaidrin": MEDEFAIDRIN_DIGITS,
 }
 
 ALL_DIGIT_MAPS = {}
@@ -242,6 +244,7 @@ class NumeralSystem(Enum):
     TAMIL = "tamil"
     PAHAWH_HMONG = "pahawh_hmong"
     GARAY = "garay"
+    MEDEFAIDRIN = "medefaidrin"
     AUTO = "auto"