diff --git a/meilisearch-tokenizer/src/lib.rs b/meilisearch-tokenizer/src/lib.rs
index fa500a840..784b58116 100644
--- a/meilisearch-tokenizer/src/lib.rs
+++ b/meilisearch-tokenizer/src/lib.rs
@@ -4,15 +4,22 @@ use slice_group_by::StrGroupBy;
 use std::iter::Peekable;
 
 pub fn is_cjk(c: char) -> bool {
-    (c >= '\u{2e80}' && c <= '\u{2eff}')
-        || (c >= '\u{2f00}' && c <= '\u{2fdf}')
-        || (c >= '\u{3040}' && c <= '\u{309f}')
-        || (c >= '\u{30a0}' && c <= '\u{30ff}')
+    (c >= '\u{1100}' && c <= '\u{11ff}')  // Hangul Jamo
+        || (c >= '\u{2e80}' && c <= '\u{2eff}')  // CJK Radicals Supplement
+        || (c >= '\u{2f00}' && c <= '\u{2fdf}') // Kangxi radical
+        || (c >= '\u{3000}' && c <= '\u{303f}') // Japanese-style punctuation
+        || (c >= '\u{3040}' && c <= '\u{309f}') // Japanese Hiragana
+        || (c >= '\u{30a0}' && c <= '\u{30ff}') // Japanese Katakana
         || (c >= '\u{3100}' && c <= '\u{312f}')
-        || (c >= '\u{3200}' && c <= '\u{32ff}')
-        || (c >= '\u{3400}' && c <= '\u{4dbf}')
-        || (c >= '\u{4e00}' && c <= '\u{9fff}')
-        || (c >= '\u{f900}' && c <= '\u{faff}')
+        || (c >= '\u{3130}' && c <= '\u{318F}') // Hangul Compatibility Jamo
+        || (c >= '\u{3200}' && c <= '\u{32ff}') // Enclosed CJK Letters and Months
+        || (c >= '\u{3400}' && c <= '\u{4dbf}') // CJK Unified Ideographs Extension A
+        || (c >= '\u{4e00}' && c <= '\u{9fff}') // CJK Unified Ideographs
+        || (c >= '\u{a960}' && c <= '\u{a97f}') // Hangul Jamo Extended-A
+        || (c >= '\u{ac00}' && c <= '\u{d7a3}') // Hangul Syllables
+        || (c >= '\u{d7b0}' && c <= '\u{d7ff}') // Hangul Jamo Extended-B
+        || (c >= '\u{f900}' && c <= '\u{faff}') // CJK Compatibility Ideographs
+        || (c >= '\u{ff00}' && c <= '\u{ffef}') // Full-width roman characters and half-width katakana
 }
 
 #[derive(Debug, Copy, Clone, PartialEq, Eq)]