diff --git a/poetry.lock b/poetry.lock
index 5a3c4110586b1f98d2564b0223a1ebf1bcb8beb6..2c0a8a571840b5386c015f486cd1bc7a9b670915 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -454,7 +454,7 @@ files = [
     {file = "colorama-0.4.6-py2.py3-none-any.whl", hash = "sha256:4f1d9991f5acc0ca119f9d443620b77f9d6b33703e51011c16baf57afb285fc6"},
     {file = "colorama-0.4.6.tar.gz", hash = "sha256:08695f5cb7ed6e0531a20572697297273c47b8cae5a63ffc6d6ed5c201be6e44"},
 ]
-markers = {main = "python_version <= \"3.11\" and platform_system == \"Windows\" or python_version <= \"3.11\" and sys_platform == \"win32\" or python_version >= \"3.12\" and platform_system == \"Windows\" or python_version >= \"3.12\" and sys_platform == \"win32\"", dev = "python_version <= \"3.11\" and sys_platform == \"win32\" or python_version >= \"3.12\" and sys_platform == \"win32\""}
+markers = {main = "python_version <= \"3.11\" and sys_platform == \"win32\" or python_version <= \"3.11\" and platform_system == \"Windows\" or python_version >= \"3.12\" and sys_platform == \"win32\" or python_version >= \"3.12\" and platform_system == \"Windows\"", dev = "python_version <= \"3.11\" and sys_platform == \"win32\" or python_version >= \"3.12\" and sys_platform == \"win32\""}
 
 [[package]]
 name = "comm"
diff --git a/pyproject.toml b/pyproject.toml
index aca6d0bf2abc2346de19cc678599886bc6cd6cdc..dd92e49d24c00c98606af5df5dc4d61b5d2e9a07 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "datascienceintro"
-version = "0.1.0"
+version = "0.2.0"
 description = "Examples for Data Science for Materials Science course"
 authors = ["Ulrich <ulrich.kerzel@rwth-aachen.de>"]
 license = "MIT"