diff --git a/Developer's-Guide.md b/Developer's-Guide.md
index 8f53003..88c45a1 100644
--- a/Developer's-Guide.md
+++ b/Developer's-Guide.md
@@ -31,7 +31,10 @@ When you install Python, make sure to install pip for dependencies management.
 
 Run
 
-```pip install -r requirements.txt```
+```
+pip install -r requirements.txt
+pre-commit install
+```
 
 In order to install required Python dependencies.