diff --git a/recursos/leccion2/postgresql/sistema/requirements.txt b/recursos/leccion2/postgresql/sistema/requirements.txt
index 2552065..add811a 100644
--- a/recursos/leccion2/postgresql/sistema/requirements.txt
+++ b/recursos/leccion2/postgresql/sistema/requirements.txt
@@ -1,3 +1,3 @@
 # Install the packages from PyPi repository.
-python-dotenv==1.0.1
+python-dotenv==1.2.2
 psycopg2==2.9.9