diff --git a/docs/installation.md b/docs/installation.md
index 657273e2f..35cdcda62 100644
--- a/docs/installation.md
+++ b/docs/installation.md
@@ -175,6 +175,7 @@ cp config.json.example config.json
 
 ``` bash
 python3 -m pip install --upgrade pip
+pip install numpy
 python3 -m pip install -r requirements.txt
 python3 -m pip install -e .
 ```