diff --git a/README.md b/README.md
index 87a6cdd498d5ec684d057f4512b23a7f9a9345a3..23ec5e0a9d302f8159fd7b5fadf5bc64cd5faf19 100644
--- a/README.md
+++ b/README.md
@@ -11,7 +11,7 @@ Python OPC-UA server to control the I2C devices in the LTS.
 This Python3 code uses other Python3 modules:
 
 - opcua
-- pyyaml
+- recordclass
 - numpy
 
 We recommend to install a virtual environment and then install the dependencies there.  For convenience we have added the relevant modules to the file `requirements.txt` that can be used to install them with pip3: `python3 -m pip install -r requirements.txt`