diff --git a/README.md b/README.md
index ce47608..acfd306 100644
--- a/README.md
+++ b/README.md
@@ -2,6 +2,10 @@
 
 Split a Cura generated GCode file into several files.
 
+Tested with GCode files from
+* Cura 3.5.1
+* Cura 4.7.1
+
 ## Features
 
 * Split by layer number or layer Z position
@@ -10,11 +14,9 @@ Split a Cura generated GCode file into several files.
 ## Requirements
 
 * Python 3.7
-* pipenv
 
 ## Usage
 
-* Run `pipenv sync`
 * Edit the `__main__` part at the bottom of `GcodeFileSplitter.py`
 ```python
 GcodeFileAnalyzer.SplitFileAtLayers(
@@ -25,4 +27,4 @@ GcodeFileAnalyzer.SplitFileAtLayers(
 
 * The Z position where to split the file can be given in layer number (starting with 0) or in millimeters (value must match an actual layer z position in the gcode file)
 * Execute `GcodeFileSplitter.py`
-  * E.g.: `pipenv run python GcodeFileSplitter.py`
+  * E.g.: `python GcodeFileSplitter.py`