diff --git a/README.md b/README.md
index f5ad9c3..0153966 100644
--- a/README.md
+++ b/README.md
@@ -5,7 +5,7 @@ Work in processing...
 
 ## Install
 
-> pip install https://github.com/PyThaiNLP/spaCy-PyThaiNLP/archive/refs/heads/main.zip
+> pip install spacy-pythainlp
 
 ## How to use
 
diff --git a/setup.py b/setup.py
index 74da862..95d4e8d 100644
--- a/setup.py
+++ b/setup.py
@@ -11,7 +11,7 @@
 
 setup(
     name="spacy-pythainlp",
-    version="0.1dev2",
+    version="0.1dev3",
     description="PyThaiNLP For spaCy",
     long_description=readme,
     long_description_content_type="text/markdown",
diff --git a/spacy_pythainlp/core.py b/spacy_pythainlp/core.py
index 95ebfc1..2bd40fc 100644
--- a/spacy_pythainlp/core.py
+++ b/spacy_pythainlp/core.py
@@ -1,7 +1,5 @@
 from pythainlp.tag import pos_tag
-from pythainlp.tag import NER
 from pythainlp.tokenize import (
-    sent_tokenize,
     word_tokenize,
     DEFAULT_SENT_TOKENIZE_ENGINE,
     DEFAULT_WORD_TOKENIZE_ENGINE
@@ -63,6 +61,7 @@ def __init__(
         self.on_tokenize = tokenize
         self.pos_corpus = pos_corpus
         if self.on_ner:
+            from pythainlp.tag import NER
             self.ner = NER(engine=DEFAULT_NER)
 
     def __call__(self, doc:Doc):
@@ -96,6 +95,7 @@ def _pos(self,doc:Doc):
         return doc
 
     def _sent(self, doc:Doc):
+        from pythainlp.tokenize import sent_tokenize
         _text = sent_tokenize(str(doc.text), engine=self.sent_engine)
         _doc = word_tokenize('SplitThword'.join(_text), engine=self.tokenize_engine)
         number_skip = 0