diff --git a/pyproject.toml b/pyproject.toml
index 3d04be8..d66cbe7 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "poetryup"
-version = "0.8.2"
+version = "0.9.0"
 description = "Update dependencies and bump their version in the pyproject.toml file"
 authors = ["Mousa Zeid Baker"]
 packages = [
diff --git a/src/poetryup/core/pyproject.py b/src/poetryup/core/pyproject.py
index 6313cbd..ebc390d 100644
--- a/src/poetryup/core/pyproject.py
+++ b/src/poetryup/core/pyproject.py
@@ -307,7 +307,7 @@ def update_dependencies(
                     dependency.name
                 ] = dependency.version
             else:
-                logging.info(f"Couldn't bump dependency '{dependency.name}'")
+                logging.warning(f"Couldn't bump dependency '{dependency.name}'")
 
     @staticmethod
     def __get_poetry_version() -> str:
@@ -316,6 +316,7 @@ def __get_poetry_version() -> str:
         Returns:
             The poetry version installed
         """
+        logging.debug("Execute: 'poetry --version'")
 
         if sys.version_info < (3, 7):
             return subprocess.check_output(
@@ -341,6 +342,7 @@ def __run_poetry_show() -> str:
         Returns:
             The output from the poetry show command
         """
+        logging.debug("Execute: 'poetry show --tree'")
 
         if sys.version_info < (3, 7):
             return subprocess.check_output(
@@ -357,6 +359,7 @@ def __run_poetry_show() -> str:
     def __run_poetry_update() -> None:
         """Run poetry update command"""
 
+        logging.debug("Execute: 'poetry update'")
         subprocess.run(["poetry", "update"])
 
     def __run_poetry_add(
@@ -372,10 +375,13 @@ def __run_poetry_add(
         """
 
         if group is None or group == "default":
+            logging.debug(f"Execute: 'poetry add {packages}'")
             subprocess.run(["poetry", "add", *packages])
         elif group == "dev" and self.poetry_version < version_.parse("1.2.0"):
+            logging.debug(f"Execute: 'poetry add {packages} --{group}'")
             subprocess.run(["poetry", "add", *packages, f"--{group}"])
         elif self.poetry_version >= version_.parse("1.2.0"):
+            logging.debug(f"Execute: 'poetry add {packages} --group {group}'")
             subprocess.run(["poetry", "add", *packages, f"--group {group}"])
         else:
-            logging.info(f"Couldn't add package(s) '{packages}'")
+            logging.warning(f"Couldn't add package(s) '{packages}'")
diff --git a/src/poetryup/main.py b/src/poetryup/main.py
index bcca587..632853c 100644
--- a/src/poetryup/main.py
+++ b/src/poetryup/main.py
@@ -1,7 +1,6 @@
 #!/usr/bin/env python
 
 import logging
-import os
 import subprocess
 from pathlib import Path
 from typing import List
@@ -11,11 +10,18 @@
 from poetryup.core.pyproject import Pyproject
 from poetryup.models.dependency import Constraint
 
-logging.basicConfig(level=os.environ.get("LOGLEVEL", "INFO").upper())
-
 app = typer.Typer(add_completion=False)
 
 
+def setup_logging(verbosity):
+    level = logging.WARNING
+    if verbosity == 1:
+        level = logging.INFO
+    elif verbosity > 1:
+        level = logging.DEBUG
+    logging.basicConfig(level=level)
+
+
 @app.command()
 def poetryup(
     latest: bool = typer.Option(
@@ -34,8 +40,16 @@ def poetryup(
         default=[],
         help="The dependency groups to include.",
     ),
+    verbose: int = typer.Option(
+        0,
+        "--verbose",
+        "-v",
+        count=True,
+        help='Increase verbosity of messages: "-v" for info, "-vv" for debug.',
+    ),
 ):
     """Update dependencies and bump their version in pyproject.toml file"""
+    setup_logging(verbose)
 
     try:
         pyproject_str = Path("pyproject.toml").read_text()
@@ -49,6 +63,7 @@ def poetryup(
     pyproject.update_dependencies(latest, without_constraint, name, group)
     Path("pyproject.toml").write_text(pyproject.dumps())
     # refresh the lock file after changes in pyproject.toml
+    logging.debug("Execute: 'poetry lock --no-update'")
     subprocess.run(["poetry", "lock", "--no-update"])