diff --git a/setup.py b/setup.py
index 083991c..eba7d5d 100644
--- a/setup.py
+++ b/setup.py
@@ -58,6 +58,7 @@
         "Hebrew": ["hebrew_tokenizer"],
         "Greek": ["greek-stemmer-pos"],
         "Arabic": ["pyarabic"],
+        "Thai": ["pythainlp"],
     },
     packages=find_packages(),
     package_data={"sumy": [
@@ -92,6 +93,7 @@
         "Natural Language :: Ukrainian",
         "Natural Language :: Greek",
         "Natural Language :: Arabic",
+        "Natural Language :: Thai",
 
         "Topic :: Education",
         "Topic :: Internet",