diff --git a/pscanner/__about__.py b/pscanner/__about__.py
index 757f5b4..e1c96e6 100644
--- a/pscanner/__about__.py
+++ b/pscanner/__about__.py
@@ -1,4 +1,4 @@
 # SPDX-FileCopyrightText: 2022-present U.N. Owen <void@some.where>
 #
 # SPDX-License-Identifier: MIT
-__version__ = '0.0.1'
+__version__ = "0.0.1"
diff --git a/pscanner/__init__.py b/pscanner/__init__.py
index a2fd857..5d04701 100644
--- a/pscanner/__init__.py
+++ b/pscanner/__init__.py
@@ -12,12 +12,15 @@ GREEN = Fore.GREEN
 RESET = Fore.RESET
 GRAY = Fore.LIGHTBLACK_EX
 
+
 def is_host_alive(host: str) -> bool:
     if ping(host, timeout=1, count=1).success():
         return True
     else:
         print(f"{GRAY}{host:15} is not alive {RESET}")
-        return False    
+        return False
+
+
 def is_port_open(host: str, port: int) -> bool:
     try:
         s = socket.socket()
@@ -31,14 +34,16 @@ def is_port_open(host: str, port: int) -> bool:
     finally:
         s.close()
 
+
 def is_subnet(ip: str) -> bool:
-    if '/' in ip:
+    if "/" in ip:
         return True
     else:
         return False
 
+
 def hosts_in_subnet(network: str) -> List:
     if not is_subnet:
         print(f"{network} is not a network")
-    
-    return list(ipaddress.ip_network(network).hosts())
\ No newline at end of file
+
+    return list(ipaddress.ip_network(network).hosts())
diff --git a/pscanner/__main__.py b/pscanner/__main__.py
index 404e5f1..d208c9a 100644
--- a/pscanner/__main__.py
+++ b/pscanner/__main__.py
@@ -3,7 +3,7 @@
 # SPDX-License-Identifier: MIT
 import sys
 
-if __name__ == '__main__':
+if __name__ == "__main__":
     from .cli import pscanner
 
     sys.exit(pscanner())
diff --git a/pscanner/cli/__init__.py b/pscanner/cli/__init__.py
index 5340046..55cddd9 100644
--- a/pscanner/cli/__init__.py
+++ b/pscanner/cli/__init__.py
@@ -6,16 +6,19 @@ from pscanner import is_port_open, is_subnet, hosts_in_subnet, is_host_alive
 from ..__about__ import __version__
 
 
-@click.group(context_settings={'help_option_names': ['-h', '--help']}, invoke_without_command=True)
-@click.version_option(version=__version__, prog_name='pscanner')
-@click.argument('host')
-@click.argument('port')
+@click.group(
+    context_settings={"help_option_names": ["-h", "--help"]},
+    invoke_without_command=True,
+)
+@click.version_option(version=__version__, prog_name="pscanner")
+@click.argument("host")
+@click.argument("port")
 @click.pass_context
 def pscanner(ctx: click.Context, host, port):
     if is_subnet(host):
         for ip in hosts_in_subnet(host):
             if is_host_alive(str(ip)):
                 is_port_open(str(ip), port)
-    else:       
-        if is_host_alive(host):     
-            is_port_open(host, port)
\ No newline at end of file
+    else:
+        if is_host_alive(host):
+            is_port_open(host, port)
diff --git a/pyproject.toml b/pyproject.toml
index cc2331c..75d8b81 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -25,6 +25,7 @@ classifiers = [
 ]
 dependencies = [
   "click",
+  "pythonping"
 ]
 dynamic = ["version"]
 
diff --git a/tests/test_pscanner.py b/tests/test_pscanner.py
index 950adb4..7605a00 100644
--- a/tests/test_pscanner.py
+++ b/tests/test_pscanner.py
@@ -1,12 +1,15 @@
 import pscanner
 import pytest
 
+
 def test_is_port_open():
     pass
 
+
 def test_is_subnet():
-    assert pscanner.is_subnet('192.168.1.0') == False
-    assert pscanner.is_subnet('192.168.0/24') == True
+    assert pscanner.is_subnet("192.168.1.0") == False
+    assert pscanner.is_subnet("192.168.0/24") == True
+
 
 def test_hosts_in_subnet():
-    assert len(pscanner.hosts_in_subnet('192.168.0.0/29')) == 6
\ No newline at end of file
+    assert len(pscanner.hosts_in_subnet("192.168.0.0/29")) == 6