diff --git a/website/docs/troubleshooting/postgres/upgrade_kubernetes.md b/website/docs/troubleshooting/postgres/upgrade_kubernetes.md
index 1137d4eee5..d7f14503cb 100644
--- a/website/docs/troubleshooting/postgres/upgrade_kubernetes.md
+++ b/website/docs/troubleshooting/postgres/upgrade_kubernetes.md
@@ -49,7 +49,7 @@ After you are connected, execute these commands to create a database backup:
 cd /bitnami/postgresql/
 
 # Set the PostgreSQL password from environment variable
-export PGPASSWORD=$POSTGRES_POSTGRES_PASSWORD
+export PGPASSWORD=$(cat $POSTGRES_PASSWORD_FILE)
 
 # Create a full database dump
 pg_dump -U $POSTGRES_USER $POSTGRES_DB > /bitnami/postgresql/dump.sql
@@ -117,7 +117,7 @@ cd /bitnami/postgresql/
 ls -lh dump.sql
 
 # Set the PostgreSQL password
-export PGPASSWORD=$POSTGRES_POSTGRES_PASSWORD
+export PGPASSWORD=$(cat $POSTGRES_PASSWORD_FILE)
 
 # Import the database dump
 psql -U $POSTGRES_USER $POSTGRES_DB < dump.sql