diff --git a/Ansible Troubleshooting.md b/Ansible Troubleshooting.md
index acd6afb9..7566726b 100644
--- a/Ansible Troubleshooting.md	
+++ b/Ansible Troubleshooting.md	
@@ -13,9 +13,55 @@ The following modules failed to execute: ansible.legacy.setup
 
 **Solution**
 
-Update the Python3 version on the target host.
+Install pyenv.
 
 ```bash
-sudo apt install python3.7
-sudo update-alternatives --install /usr/bin/python3 python3 /usr/bin/python3.7 1
-```
\ No newline at end of file
+sudo su
+curl https://pyenv.run | bash
+```
+
+Install python build dependencies.
+``
+```
+# Install gcc libraries
+apt install build-essential
+
+# Install libraries for bz2 support
+apt install libbz2-dev
+
+# Install libraries for _curses support
+apt install libncurses5-dev libncursesw5-dev
+
+# Install libraries for ctypes support
+apt install libffi-dev
+
+# Install libraries for readline support
+apt install libreadline-dev
+
+# Install libraries for SSL support
+apt install libssl-dev
+
+# General dependencies for Python build
+apt install zlib1g-dev libsqlite3-dev liblzma-dev libgdbm-dev libnss3-dev
+```
+
+Init pyenv.
+
+```bash
+export PYENV_ROOT="$HOME/.pyenv"
+[[ -d $PYENV_ROOT/bin ]] && export PATH="$PYENV_ROOT/bin:$PATH"
+eval "$(pyenv init -)"
+```
+
+Install python 3.7
+
+```bash
+pyenv install 3.7
+```
+
+Set Ansible python interpreter.
+
+```yml
+ansible_python_interpreter: 
+```
+
diff --git a/Janik von Rotz.md b/Janik von Rotz.md
index 01f8ef23..d88b9f50 100644
--- a/Janik von Rotz.md	
+++ b/Janik von Rotz.md	
@@ -11,7 +11,9 @@ Alias: `jvr`\
 Mail: <janik.vonrotz@mint-sytem.ch>\
 Alias: janik, jvr, login\
 Matrix: `@janikvonrotz:mint-system.ch`\
-vCard: [[vCard#Janik von Rotz]]
+vCard: [[vCard#Janik von Rotz]]\
+GitHub: <https://github.com/janikvonrotz>\
+GitLab: <https://gitlab.com/janikvonrotz/>
 
 ## SSH
 
diff --git a/Laszlo Krajnikovszkij.md b/Laszlo Krajnikovszkij.md
index 1cc0ab70..953582d0 100644
--- a/Laszlo Krajnikovszkij.md	
+++ b/Laszlo Krajnikovszkij.md	
@@ -11,7 +11,8 @@ Alias: `lkr`\
 Mail: <laszlo.krajnikovszkij@mint-system.ch>\
 Matrix: `@laszlo:mint-system.ch`\
 Alias: lkr, laszlo
-GitHub: https://github.com/laszlo-lk
+GitHub: https://github.com/laszlo-lk\
+GitLab: <https://gitlab.com/laszlokr>
 
 ## SSH
 
diff --git a/Mint System GmbH.md b/Mint System GmbH.md
index 26f90e49..a5c22724 100644
--- a/Mint System GmbH.md	
+++ b/Mint System GmbH.md	
@@ -19,6 +19,10 @@ UID: CHE-150.248.608
 * [[Kurt Gisler]]
 * [[Laszlo Krajnikovszkij]]
 
+## Freischaffende
+
+* [[Ulrich Kilian]]
+
 ### Ehemalige
 
 * [[Marco Roeleven]]
diff --git a/Prozesse Personal - Onboarding.md b/Prozesse Personal - Onboarding.md
index 1bdfed0a..69e0c3dd 100644
--- a/Prozesse Personal - Onboarding.md	
+++ b/Prozesse Personal - Onboarding.md	
@@ -19,7 +19,7 @@ tags:
 
 Arbeitsschritte:
 * Mitarbeiter-Eintrag in Wiki erfassen
-* E-Mail-Account anlegen
+	* E-Mail-Account anlegen
 * Matrix-Benutzer erstellen
 * Keycloak-Benutzer anlegen
 * Zugriffsdaten schicken
diff --git a/Python HowTo.md b/Python HowTo.md
new file mode 100644
index 00000000..6b68449b
--- /dev/null
+++ b/Python HowTo.md	
@@ -0,0 +1,12 @@
+# Python HowTo
+
+## Manage multiple python versions
+
+You can install multiple python version like tihs:
+
+```bash
+sudo apt update
+sudo apt install python3.7
+sudo update-alternatives --install /usr/bin/python3 python3 /usr/bin/python3.6 1
+sudo update-alternatives --install /usr/bin/python3 python3 /usr/bin/python3.7 2
+```
\ No newline at end of file
diff --git a/Python.md b/Python.md
new file mode 100644
index 00000000..69a12008
--- /dev/null
+++ b/Python.md
@@ -0,0 +1,3 @@
+# Python
+
+[[Python HowTo]]
\ No newline at end of file
diff --git a/Softwareentwicklung.md b/Softwareentwicklung.md
index f3bb3f74..c0dbbe67 100644
--- a/Softwareentwicklung.md
+++ b/Softwareentwicklung.md
@@ -4,6 +4,10 @@ tags:
 ---
 # Softwareentwicklung
 
+## Programmiersprache
+
+Wir verwenden [[Python]] für alle Projekte.
+
 ## Terminal
 
 Wir verwenden [[Zsh]] als Shell. 
diff --git a/Ulrich Kilian.md b/Ulrich Kilian.md
new file mode 100644
index 00000000..ccd64bd1
--- /dev/null
+++ b/Ulrich Kilian.md	
@@ -0,0 +1,15 @@
+---
+tags:
+- Definition
+---
+# Ulrich Kilian
+
+Verantwortlich: [[Development]]
+
+Benutzername: `ulrichkilian`\
+Alias: `uki`\
+Mail: <ulrich.kilian@mint-sytem.ch>\
+Alias: ulrich\
+Matrix: `@ulrichkilian:mint-system.ch`\
+GitLab: <https://gitlab.com/scienceuli>\
+GitHub: <https://github.com/scienceuli>
\ No newline at end of file