diff --git a/web-portal/backend/fly.prod.toml b/web-portal/backend/fly.prod.toml
index e056cae..c655711 100644
--- a/web-portal/backend/fly.prod.toml
+++ b/web-portal/backend/fly.prod.toml
@@ -13,6 +13,7 @@ primary_region = 'sea'
   # ONEINCH_API_KEY = ...
   # OX_API_KEY = ...
   # RPC_KEY = ...
+  PROM_URL = 'https://api.fly.io/prometheus/porters/api/v1/'
 
 [[services]]
   internal_port = 4000
diff --git a/web-portal/backend/fly.toml b/web-portal/backend/fly.toml
index aef5370..d80a8be 100644
--- a/web-portal/backend/fly.toml
+++ b/web-portal/backend/fly.toml
@@ -15,6 +15,7 @@ primary_region = 'sea'
   # ONEINCH_API_KEY = ...
   # OX_API_KEY = ...
   # RPC_KEY = ...
+  PROM_URL = 'https://api.fly.io/prometheus/porters-staging/api/v1/'
 
 [http_service]
   internal_port = 4000