diff --git a/README.md b/README.md
index a52d60f..8923b03 100644
--- a/README.md
+++ b/README.md
@@ -1,5 +1,6 @@
 # PV Opt: Home Assistant Solar/Battery Optimiser v3.15.3
 
+
 Solar / Battery Charging Optimisation for Home Assistant. This appDaemon application attempts to optimise charging and discharging of a home solar/battery system to minimise cost electricity cost on a daily basis using freely available solar forecast data from SolCast. This is particularly beneficial for Octopus Agile but is also benefeficial for other time-of-use tariffs such as Octopus Flux or simple Economy 7.
 
 The application will integrate fully with Solis inverters which are controlled using any of:
@@ -183,12 +184,13 @@ AppDaemon is a loosely coupled, multi-threaded, sandboxed python execution envir
 
 5. Click on <b>Configuration</b> at the top
 
-6. Click the 3 dots and <b>Edit in YAML</b> to add `pandas` as a Python package:
+6. Click the 3 dots and <b>Edit in YAML</b> to add `pandas` and `numpy` as Python packages. Note that `numpy` has to be set to version `1.26.4` due to an unresolved compatability issue between Home Assistant and `2.0.0`:
 
    ```
    init_commands: []
    python_packages:
      - pandas
+     - numpy==1.26.4
    system_packages: []
 
    ```
diff --git a/apps/pv_opt/pv_opt.py b/apps/pv_opt/pv_opt.py
index b9e2adf..5006b79 100644
--- a/apps/pv_opt/pv_opt.py
+++ b/apps/pv_opt/pv_opt.py
@@ -14,6 +14,7 @@
 
 VERSION = "3.15.3"
 
+
 OCTOPUS_PRODUCT_URL = r"https://api.octopus.energy/v1/products/"
 
 DEBUG = False