diff --git a/docs/CMakeLists.txt b/docs/CMakeLists.txt
index d5143bdb..6472722a 100644
--- a/docs/CMakeLists.txt
+++ b/docs/CMakeLists.txt
@@ -26,7 +26,10 @@ ADD_CUSTOM_TARGET(doc
    COMMAND ${CMAKE_CURRENT_SOURCE_DIR}/bash2md.sh ${PROJECT_SOURCE_DIR}/vagrant/Install-on-Centos-8.sh ${CMAKE_CURRENT_BINARY_DIR}/appendix/Install-on-Centos-8.md
    COMMAND ${CMAKE_CURRENT_SOURCE_DIR}/bash2md.sh ${PROJECT_SOURCE_DIR}/vagrant/Install-on-Ubuntu-18.sh ${CMAKE_CURRENT_BINARY_DIR}/appendix/Install-on-Ubuntu-18.md
    COMMAND ${CMAKE_CURRENT_SOURCE_DIR}/bash2md.sh ${PROJECT_SOURCE_DIR}/vagrant/Install-on-Ubuntu-20.sh ${CMAKE_CURRENT_BINARY_DIR}/appendix/Install-on-Ubuntu-20.md
-   COMMAND mkdocs build -d ${CMAKE_CURRENT_BINARY_DIR}/../site-html -f ${CMAKE_CURRENT_BINARY_DIR}/../mkdocs.yml
+   COMMAND PYTHONPATH=${PROJECT_SOURCE_DIR} mkdocs build -d ${CMAKE_CURRENT_BINARY_DIR}/../site-html -f ${CMAKE_CURRENT_BINARY_DIR}/../mkdocs.yml
 )
 
-
+ADD_CUSTOM_TARGET(serve-doc
+    COMMAND PYTHONPATH=${PROJECT_SOURCE_DIR} mkdocs serve
+    WORKING_DIRECTORY ${PROJECT_BINARY_DIR}
+)
diff --git a/docs/develop/Development-Environment.md b/docs/develop/Development-Environment.md
index eea69c70..f1610a49 100644
--- a/docs/develop/Development-Environment.md
+++ b/docs/develop/Development-Environment.md
@@ -38,6 +38,7 @@ It has the following additional requirements:
 The documentation is built with mkdocs:
 
 * [mkdocs](https://www.mkdocs.org/) >= 1.1.2
+* [mkdocstrings](https://mkdocstrings.github.io/)
 
 ### Installing prerequisites on Ubuntu/Debian
 
@@ -51,7 +52,7 @@ To install all necessary packages run:
 sudo apt install php-cgi phpunit php-codesniffer \
                  python3-pip python3-setuptools python3-dev pylint
 
-pip3 install --user behave mkdocs pytest
+pip3 install --user behave mkdocs mkdocstrings pytest
 ```
 
 The `mkdocs` executable will be located in `.local/bin`. You may have to add
@@ -113,7 +114,7 @@ symlinks (see `CMakeLists.txt` for the exact steps).
 Now you can start webserver for local testing
 
 ```
-build> mkdocs serve
+build> mame serve-doc
 [server:296] Serving on http://127.0.0.1:8000
 [handlers:62] Start watching changes
 ```
@@ -122,7 +123,7 @@ If you develop inside a Vagrant virtual machine, use a port that is forwarded
 to your host:
 
 ```
-build> mkdocs serve --dev-addr 0.0.0.0:8088
+build> PYTHONPATH=$SRCDIR mkdocs serve --dev-addr 0.0.0.0:8088
 [server:296] Serving on http://0.0.0.0:8088
 [handlers:62] Start watching changes
 ```