diff --git a/roles/grafana/tasks/main.yml b/roles/grafana/tasks/main.yml
index 9ec33e0..05b4bf6 100644
--- a/roles/grafana/tasks/main.yml
+++ b/roles/grafana/tasks/main.yml
@@ -12,7 +12,7 @@
     docker_database: postgres
     docker_env:
       GF_DATABASE_TYPE: postgres
-      GF_DATABASE_HOST: grafana_db:5432
+      GF_DATABASE_HOST: grafana-db:5432
       GF_DATABASE_NAME: grafana
       GF_DATABASE_USER: grafana
       GF_DATABASE_PASSWORD: "{{ database_passwords.grafana }}"
diff --git a/roles/prometheus/tasks/main.yml b/roles/prometheus/tasks/main.yml
index 54d4e6a..e8899ba 100644
--- a/roles/prometheus/tasks/main.yml
+++ b/roles/prometheus/tasks/main.yml
@@ -63,4 +63,5 @@
   vars:
     docker_networks: 
       - name: prometheus
+      - name: grafana
   when: prometheus_install_grafana