diff --git a/development.md b/development.md
index 459a456..4073b33 100644
--- a/development.md
+++ b/development.md
@@ -14,10 +14,12 @@ python src/run.py
 ```
 
 ## Building from source
-If you want to build a .exe from source you will have to first add the cv2 path to your PYTHONPATH:</br>
-Edit System environment variables -> Enfironment Vriables... -> PYTHONPATH -> C:\Users\\$USER\miniconda3\envs\botty\lib\site-packages\cv2.
+If you want to build a .exe from source you will have to first add the cv2 path to your PYTHONPATH in System variables or User variables for current user:</br>
+Edit the system environment variables -> Environment Variables... -> New... 
+Variable name: PYTHONPATH 
+Variable value: %USERPROFILE%\miniconda3\envs\botty\Lib\site-packages\cv2
 
-Note that you will have to replace `$USER` with your windows user. e.g. C:\Users\aeon\...
+If you installed your miniconda in another location you will of course have ot change it for that one.
 ```python
 # building .exe and bundeling all needed resource into one folder
 python release.py
diff --git a/environment.yml b/environment.yml
index 6b2a223..2a2615f 100644
--- a/environment.yml
+++ b/environment.yml
@@ -14,3 +14,4 @@ dependencies:
     - keyboard
     - graphviz
     - beautifultable
+    - zstandard