diff --git a/konoha/__init__.py b/konoha/__init__.py
index 77c3322..f5b7830 100644
--- a/konoha/__init__.py
+++ b/konoha/__init__.py
@@ -1,5 +1,5 @@
 """__init__.py."""
-from importlib_metadata import version
+from importlib.metadata import version
 
 from konoha.sentence_tokenizer import SentenceTokenizer  # NOQA
 from konoha.word_tokenizer import WordTokenizer  # NOQA
diff --git a/poetry.lock b/poetry.lock
index 89925b3..4423787 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -687,13 +687,13 @@ files = [
 
 [[package]]
 name = "importlib-metadata"
-version = "6.11.0"
+version = "7.0.1"
 description = "Read metadata from Python packages"
-optional = false
+optional = true
 python-versions = ">=3.8"
 files = [
-    {file = "importlib_metadata-6.11.0-py3-none-any.whl", hash = "sha256:f0afba6205ad8f8947c7d338b5342d5db2afbfd82f9cbef7879a9539cc12eb9b"},
-    {file = "importlib_metadata-6.11.0.tar.gz", hash = "sha256:1231cf92d825c9e03cfc4da076a16de6422c863558229ea0b22b675657463443"},
+    {file = "importlib_metadata-7.0.1-py3-none-any.whl", hash = "sha256:4805911c3a4ec7c3966410053e9ec6a1fecd629117df5adee56dfc9432a1081e"},
+    {file = "importlib_metadata-7.0.1.tar.gz", hash = "sha256:f238736bb06590ae52ac1fab06a3a9ef1d8dce2b7a35b5ab329371d6c8f5d2cc"},
 ]
 
 [package.dependencies]
@@ -2151,7 +2151,7 @@ files = [
 name = "zipp"
 version = "3.17.0"
 description = "Backport of pathlib-compatible object wrapper for zip files"
-optional = false
+optional = true
 python-versions = ">=3.8"
 files = [
     {file = "zipp-3.17.0-py3-none-any.whl", hash = "sha256:0e923e726174922dce09c53c59ad483ff7bbb8e572e00c7f7c46b88556409f31"},
@@ -2177,4 +2177,4 @@ sudachi = ["sudachidict-core", "sudachipy"]
 [metadata]
 lock-version = "2.0"
 python-versions = "^3.8.0"
-content-hash = "f960e721f2a3dccf7d0a659e9b3244d4223966f8e56a6cfde0d01e176629ea7f"
+content-hash = "964dc56042735293086460a6d565d7cdd84e9602a4b369c62d83a9df855f7f67"
diff --git a/pyproject.toml b/pyproject.toml
index c61ab5d..706cccb 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -11,7 +11,6 @@ license = "MIT"
 
 [tool.poetry.dependencies]
 python = "^3.8.0"
-importlib-metadata = ">=4.0.0,<7.0.0"
 janome = {version = "^0.5.0", optional = true}
 natto-py = {version = "^1.0.0", optional = true}
 kytea = {version = "^0.1.4", optional = true}