diff --git a/requirements.txt b/requirements.txt
index 2c8bd9f3e7..4749a78a91 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,3 +1,4 @@
+invoke>=1.4.0                   # Invoke build tool
 wheel>=0.34.2                   # Wheel
 Django==3.0.7                   # Django package
 pillow==7.1.0                   # Image manipulation
@@ -31,5 +32,6 @@ django-test-migrations==1.1.0   # Unit testing for database migrations
 python-barcode[images]==0.13.1  # Barcode generator
 qrcode[pil]==6.1                # QR code generator
 django-q==1.3.4                 # Background task scheduling
+gunicorn>=20.0.4                # Gunicorn web server
 
 inventree                       # Install the latest version of the InvenTree API python library