diff --git a/README.md b/README.md
index 4e54566282dd375ee0422c164f6914c294abf4e6..00559b6f0e00d2fd3a573d474f95b519f4a62925 100644
--- a/README.md
+++ b/README.md
@@ -10,4 +10,6 @@ Model code. At the moment, it only includes a CBL model.
 Data assimilation code. Includes implementations of the EAKF and the LETKF. Also includes classes for data assimilation cycles, diagnostics and experiments (nature run + cycle + diagnostics).
 
 * `graphics.py`  
-Includes all the code for generating figures.
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+Includes all the code for generating figures.
+
+The code depends on `numpy`, `scipy`, `matplotlib.pyplot`
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