diff --git a/analyze.py b/analyze.py
old mode 100755
new mode 100644
diff --git a/get_qualified_sentences.py b/get_qualified_sentences.py
old mode 100755
new mode 100644
diff --git a/get_raw_data.py b/get_raw_data.py
old mode 100755
new mode 100644
diff --git a/mecab-test.py b/mecab-test.py
old mode 100755
new mode 100644
diff --git a/mecab_utils/sentence.py b/mecab_utils/sentence.py
old mode 100755
new mode 100644
diff --git a/python-mecab-test/encoding-test.py b/python-mecab-test/encoding-test.py
old mode 100755
new mode 100644
diff --git a/python-mecab-test/extract_feature.py b/python-mecab-test/extract_feature.py
old mode 100755
new mode 100644
diff --git a/python-mecab-test/mecab-test.py b/python-mecab-test/mecab-test.py
old mode 100755
new mode 100644
diff --git a/split_into_sentences.py b/split_into_sentences.py
old mode 100755
new mode 100644