diff --git a/CHANGE.md b/CHANGE.md
index ca39631..5f0baef 100755
--- a/CHANGE.md
+++ b/CHANGE.md
@@ -1,6 +1,13 @@
 NLPAUG Change Log
 ================
 
+**0.0.18 Aug 21, 2020
+*   Fix PPDB model misloaded nltk module[#144](https://github.com/makcedward/nlpaug/issues/144)
+
+**0.0.17 Aug 20, 2020
+*   Enhance default tokenizer and reverse tokenizer[#143](https://github.com/makcedward/nlpaug/issues/143)
+*   Introduce Abstractive Summarization in sentence ausgmenter (Check out example from [here](https://github.com/makcedward/nlpaug/blob/master/example/textual_augmenter.ipynb))
+
 **0.0.16 Aug 10, 2020
 *   Fix [#142](https://github.com/makcedward/nlpaug/issues/142)
 
diff --git a/README.md b/README.md
index 7bc9c6a..45c7ea1 100755
--- a/README.md
+++ b/README.md
@@ -129,9 +129,8 @@ pip install librosa>=0.7.1
 
 ## Recent Changes
 
-**0.0.17dev
-*   Enhance default tokenizer and reverse tokenizer[#143](https://github.com/makcedward/nlpaug/issues/143)
-*   Introduce Abstractive Summarization in sentence ausgmenter (Check out example from [here](https://github.com/makcedward/nlpaug/blob/master/example/textual_augmenter.ipynb))
+**0.0.18 Aug 21, 2020
+*   Fix PPDB model misloaded nltk module[#144](https://github.com/makcedward/nlpaug/issues/144)
 
 See [changelog](https://github.com/makcedward/nlpaug/blob/master/CHANGE.md) for more details.
 
diff --git a/nlpaug/model/word_dict/ppdb.py b/nlpaug/model/word_dict/ppdb.py
index d443332..e7daaae 100755
--- a/nlpaug/model/word_dict/ppdb.py
+++ b/nlpaug/model/word_dict/ppdb.py
@@ -20,11 +20,6 @@ def __init__(self, dict_path):
         self.score_threshold = self.get_default_score_thresholds() # TODO: support other filtering
         self.is_synonym = True  # TODO: antonyms
 
-        try:
-            import wordnet
-        except ModuleNotFoundError:
-            raise ModuleNotFoundError('Missed nltk library. Install it via `pip install nltk`')
-
         self._init()
 
     def _init(self):