diff --git a/README.md b/README.md
index ab83d17d..2222e65a 100644
--- a/README.md
+++ b/README.md
@@ -24,20 +24,21 @@ Hit Ctrl-C to quit.
 
 <summary>More command line options</summary>
 
-```
-$ optuna-dashboard --help
-usage: optuna-dashboard [-h] [--port PORT] [--host HOST] [--quiet] storage
+```console
+$ optuna-dashboard -h
+usage: optuna-dashboard [-h] [--port PORT] [--host HOST] [--version] [--quiet] storage
 
-A third-party dashboard for optuna.
+Web dashboard for optuna.
 
 positional arguments:
-  storage      Optuna Storage URL
+  storage        Optuna Storage URL
 
 optional arguments:
-  -h, --help   show this help message and exit
-  --port PORT  port number (default: 8080)
-  --host HOST  hostname (default: 'localhost')
-  --quiet      quiet
+  -h, --help     show this help message and exit
+  --port PORT    port number (default: 8080)
+  --host HOST    hostname (default: 127.0.0.1)
+  --version, -v  show program's version number and exit
+  --quiet, -q    quiet
 ```
 
 </details>
diff --git a/optuna_dashboard/cli.py b/optuna_dashboard/cli.py
index 09e78b04..0bdea9b0 100644
--- a/optuna_dashboard/cli.py
+++ b/optuna_dashboard/cli.py
@@ -2,18 +2,20 @@ import argparse
 from bottle import run
 
 from .app import create_app
+from .version import __version__
 
 
 def main():
-    parser = argparse.ArgumentParser(description="A third-party dashboard for optuna.")
+    parser = argparse.ArgumentParser(description="Web dashboard for optuna.")
     parser.add_argument("storage", help="Optuna Storage URL", type=str)
     parser.add_argument(
-        "--port", help="port number (default: 8080)", type=int, default=8080
+        "--port", help="port number (default: %(default)s)", type=int, default=8080
     )
     parser.add_argument(
-        "--host", help="hostname (default: 'localhost')", default="localhost"
+        "--host", help="hostname (default: %(default)s)", default="127.0.0.1"
     )
-    parser.add_argument("--quiet", help="quiet", action="store_true")
+    parser.add_argument("--version", "-v", action="version", version=__version__)
+    parser.add_argument("--quiet", "-q", help="quiet", action="store_true")
     args = parser.parse_args()
 
     app = create_app(args.storage)
diff --git a/optuna_dashboard/version.py b/optuna_dashboard/version.py
new file mode 100644
index 00000000..3b93d0be
--- /dev/null
+++ b/optuna_dashboard/version.py
@@ -0,0 +1 @@
+__version__ = "0.0.2"
diff --git a/setup.py b/setup.py
index b3ab3a57..f1f1b978 100644
--- a/setup.py
+++ b/setup.py
@@ -1,15 +1,30 @@
 import os
+import types
+
 from setuptools import setup, find_packages
+from importlib.machinery import SourceFileLoader
+
+BASE_PATH = os.path.dirname(__file__)
 
 
 def get_long_description() -> str:
-    readme_filepath = os.path.join(os.path.dirname(__file__), "README.md")
+    readme_filepath = os.path.join(BASE_PATH, "README.md")
     with open(readme_filepath) as f:
         return f.read()
 
+
+def get_version():
+    version_filepath = os.path.join(BASE_PATH, "optuna_dashboard", "version.py")
+    module_name = "version"
+    target_module = types.ModuleType(module_name)
+    loader = SourceFileLoader(module_name, version_filepath)
+    loader.exec_module(target_module)
+    return getattr(target_module, "__version__")
+
+
 setup(
     name="optuna-dashboard",
-    version="0.0.2",
+    version=get_version(),
     description="Web dashboard for Optuna.",
     long_description=get_long_description(),
     long_description_content_type="text/markdown",