diff --git a/pyproject.toml b/pyproject.toml
index fe717d4cc..409614b17 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -30,6 +30,7 @@ include = [
 
 [tool.poetry.extras]
 mysql = ["PyMySQL"]
+sortinghat = ["sortinghat"]
 
 [tool.poetry.urls]
 "Bug Tracker" = "https://github.com/chaoss/grimoirelab-elk/issues"