diff --git a/pyproject.toml b/pyproject.toml
index b60e086..0393f02 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "poetryup"
-version = "0.12.0"
+version = "0.12.1"
 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 41270d8..84ae297 100644
--- a/src/poetryup/core/pyproject.py
+++ b/src/poetryup/core/pyproject.py
@@ -341,7 +341,7 @@ def __get_poetry_version() -> str:
 
         output = cmd_run(["poetry", "--version"], capture_output=True)
         # output is: 'Poetry version x.y.z'
-        return output.rsplit(" ", 1).pop().strip()
+        return output.rsplit(" ", 1).pop().strip().replace(")", "")
 
     @staticmethod
     def __run_poetry_show() -> str:
@@ -376,6 +376,6 @@ def __run_poetry_add(
         elif group == "dev" and self.poetry_version < version_.parse("1.2.0"):
             cmd_run(["poetry", "add", *packages, f"--{group}"])
         elif self.poetry_version >= version_.parse("1.2.0"):
-            cmd_run(["poetry", "add", *packages, f"--group {group}"])
+            cmd_run(["poetry", "add", *packages, "--group", group])
         else:
             logging.warning(f"Couldn't add package(s) '{packages}'")