diff --git a/.codecov.yml b/.codecov.yml
index b4a4c79..75bbea5 100644
--- a/.codecov.yml
+++ b/.codecov.yml
@@ -16,6 +16,5 @@ coverage:
 
 ignore:
   - "mapca/tests/"
-  - "mapca/due.py"
   - "mapca/_version.py"
   - "mapca/info.py"
diff --git a/mapca/__init__.py b/mapca/__init__.py
index 9438a3a..b440fb8 100644
--- a/mapca/__init__.py
+++ b/mapca/__init__.py
@@ -4,7 +4,6 @@
 """
 
 from ._version import get_versions
-from .due import Doi, due
 from .mapca import MovingAveragePCA, ma_pca
 
 __version__ = get_versions()["version"]
diff --git a/mapca/due.py b/mapca/due.py
deleted file mode 100644
index 3f0c76d..0000000
--- a/mapca/due.py
+++ /dev/null
@@ -1,65 +0,0 @@
-"""
-Stub file for a guaranteed safe import of duecredit constructs:  if duecredit
-is not available.
-To use it, place it into your project codebase to be imported, e.g. copy as
-    cp stub.py /path/tomodule/module/due.py
-Note that it might be better to avoid naming it duecredit.py to avoid shadowing
-installed duecredit.
-Then use in your code as
-    from .due import due, Doi, BibTeX
-See  https://github.com/duecredit/duecredit/blob/master/README.md for examples.
-Origin:     Originally a part of the duecredit
-Copyright:  2015-2016  DueCredit developers
-License:    BSD-2
-"""
-
-__version__ = "0.0.5"
-
-
-class InactiveDueCreditCollector(object):
-    """Just a stub at the Collector which would not do anything"""
-
-    def _donothing(self, *args, **kwargs):
-        """Perform no good and no bad"""
-        pass
-
-    def dcite(self, *args, **kwargs):
-        """If I could cite I would"""
-
-        def nondecorating_decorator(func):
-            return func
-
-        return nondecorating_decorator
-
-    cite = load = add = _donothing
-
-    def __repr__(self):
-        return self.__class__.__name__ + "()"
-
-
-def _donothing_func(*args, **kwargs):
-    """Perform no good and no bad"""
-    pass
-
-
-try:
-    from duecredit import due, BibTeX, Doi, Url
-
-    if "due" in locals() and not hasattr(due, "cite"):
-        raise RuntimeError("Imported due lacks .cite. DueCredit is now disabled")
-except Exception as e:
-    if type(e).__name__ != "ImportError":
-        import logging
-
-        logging.getLogger("duecredit").error("Failed to import duecredit due to %s" % str(e))
-    # Initiate due stub
-    due = InactiveDueCreditCollector()
-    BibTeX = Doi = Url = _donothing_func
-
-# Emacs mode definitions
-# Local Variables:
-# mode: python
-# py-indent-offset: 4
-# tab-width: 4
-# indent-tabs-mode: nil
-# End:
diff --git a/mapca/info.py b/mapca/info.py
index d16d619..e993d88 100644
--- a/mapca/info.py
+++ b/mapca/info.py
@@ -4,10 +4,10 @@
 """
 Base module variables
 """
+
 import importlib.util
 import json
 import os.path as op
-
 from pathlib import Path
 
 # Get version
@@ -82,13 +82,12 @@
         "sphinx-argparse",
     ],
     "tests": TESTS_REQUIRES,
-    "duecredit": ["duecredit"],
 }
 
 ENTRY_POINTS = {}
 
 # Enable a handle to install all extra dependencies at once
-EXTRA_REQUIRES["all"] = list(set([v for deps in EXTRA_REQUIRES.values() for v in deps]))
+EXTRA_REQUIRES["all"] = list({v for deps in EXTRA_REQUIRES.values() for v in deps})
 
 # Supported Python versions using PEP 440 version specifiers
 # Should match the same set of Python versions as classifiers
diff --git a/pyproject.toml b/pyproject.toml
index aa578e1..ae0466c 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -21,6 +21,5 @@ exclude = '''
   | versioneer.py
   | mapca/info.py
   | mapca/_version.py
-  | mapca/due.py
 )
 '''
\ No newline at end of file