diff --git a/requirements.txt b/requirements.txt
index c206846..91799cc 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -18,7 +18,7 @@ scikit-learn>=0.24.0
 sentence-splitter==1.4
 tqdm>=4.38.0
 fasttext==0.9.2
-mecab-python3==1.0.5
+mecab-python3>=1.0.8
 unidic-lite==1.0.8
 subword-nmt==0.3.8
 Morfessor==2.0.6
diff --git a/setup.py b/setup.py
index f567c42..4eec909 100644
--- a/setup.py
+++ b/setup.py
@@ -12,7 +12,7 @@
     "langid",
     "matplotlib",
     "morfessor",
-    "opus-fast-mosestokenizer",
+    "opus-fast-mosestokenizer>=0.0.8.5",
     "pandas>=1.0.0",
     "pycld2",
     "xxhash>=3.2.0",
@@ -35,7 +35,7 @@
 ]
 
 mecab_require = [
-    'mecab-python3>=1.0.0',
+    'mecab-python3>=1.0.8',
     'unidic-lite'
 ]