diff --git a/README.md b/README.md
index fad8a8c..aea0786 100644
--- a/README.md
+++ b/README.md
@@ -219,3 +219,5 @@ in the Python folder.
 - https://www.imc-tm.de/produkte/messtechnik-hardware/imc-cronosflex/ueberblick/
 - https://cython.readthedocs.io/en/latest/src/userguide/wrapping_CPlusPlus.html
 - https://github.com/Apollo3zehn/ImcFamosFile
+- https://pypi.org/help/#apitoken
+
diff --git a/myfile.raw b/myfile.raw
new file mode 100644
index 0000000..e69de29
diff --git a/pip/makefile b/pip/makefile
index e94d1e9..ea6f36d 100644
--- a/pip/makefile
+++ b/pip/makefile
@@ -11,6 +11,9 @@ sdist: ../cython/py_imc_termite.pyx ../cython/imc_termite.pxd ../cython/py_imc_t
 	cp -v ../LICENSE ./
 	python3 setup.py sdist
 
+# authentication:
+# - username: __token__
+# - password: <token value including pypi-prefix>
 upload:
 	python3 -m twine upload dist/$(shell ls -t dist/ | head -n1)