diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 9f13c7c..d348c78 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -16,21 +16,12 @@ jobs:
 
     steps:
       - name: Checkout code
-        uses: actions/checkout@v2
+        uses: actions/checkout@v4
 
-      - name: Install dependencies
+      - name: Run tests
         run: |
-          sudo apt-get update
           sudo apt-get install -y python3 python3-venv python3-pip
-          python3 -m pip install --upgrade pip
           python3 -m venv .venv
           source .venv/bin/activate
-          pip install ".[test]"
-
-      - name: Run Pytest
-        shell: 'script -q -e -c "bash {0}"' # work around tty issues
-        env:
-          TERM: linux # fix tput for tty issue work around
-        run: |
-          source .venv/bin/activate
+          python3 -m pip install ".[test]"
           python3 -m pytest
diff --git a/src/khalorg/khal/calendar.py b/src/khalorg/khal/calendar.py
index 77397dd..8a363d5 100644
--- a/src/khalorg/khal/calendar.py
+++ b/src/khalorg/khal/calendar.py
@@ -84,8 +84,8 @@ def __init__(self, name: str):
         """
         path_config: Union[str, None] = find_configuration_file()
 
-        new_item_args: list = ['khal', 'new']
-        list_args: list = ['khal', 'list', '-df', '']
+        new_item_args: list = ["python3", "-m", "khal", "new"]
+        list_args: list = ["python3", "-m", "khal", "list", "-df", ""]
 
         self._collection: CalendarCollection
         self._new_item: Callable = subprocess_callback(new_item_args)
diff --git a/src/khalorg/khal/helpers.py b/src/khalorg/khal/helpers.py
index 00ae0a9..d6a616a 100644
--- a/src/khalorg/khal/helpers.py
+++ b/src/khalorg/khal/helpers.py
@@ -1,4 +1,5 @@
 import logging
+import sys
 from datetime import date, datetime
 from subprocess import STDOUT, CalledProcessError, check_output
 from typing import Callable
@@ -56,6 +57,7 @@ def subprocess_callback(cmd: list) -> Callable:
         callback function
 
     """
+
     def callback(args: list) -> str:
         return try_check_output([*cmd, *args]).decode()
 
@@ -64,12 +66,13 @@ def callback(args: list) -> str:
 
 def try_check_output(args: list) -> bytes:
     try:
-        return check_output(args, stderr=STDOUT)
+        return check_output(args, stderr=STDOUT, executable=sys.executable)
     except CalledProcessError as error:
         error_message: str = (
             f"The following arguments were sent to khal:\n\n{' '.join(args)}"
             "\n\nNext, the following error was received from khal:\n\n"
-            f"{error.output.decode()}\n\n")
+            f"{error.output.decode()}\n\n"
+        )
         logging.critical(error_message)
         raise Exception(error_message) from error