diff --git a/.golangci.yml b/.golangci.yml
index b7f94c6..c41e523 100644
--- a/.golangci.yml
+++ b/.golangci.yml
@@ -59,6 +59,7 @@ linters-settings:
           - github.com/stretchr/testify
           - github.com/slok/go-http-metrics
           - github.com/purini-to/zapmw
+          - github.com/caitlinelfring/go-env-default
 
 issues:
   max-same-issues: 0 # unlimited
diff --git a/go.mod b/go.mod
index 5eebdc0..af1105c 100644
--- a/go.mod
+++ b/go.mod
@@ -4,6 +4,7 @@ go 1.21
 
 require (
 	github.com/Shopify/toxiproxy v2.1.4+incompatible
+	github.com/caitlinelfring/go-env-default v1.1.0
 	github.com/ethereum/go-ethereum v1.13.5
 	github.com/gorilla/mux v1.8.1
 	github.com/mwitkow/go-conntrack v0.0.0-20190716064945-2f068394615f
diff --git a/go.sum b/go.sum
index 2e2b733..3bdbeae 100644
--- a/go.sum
+++ b/go.sum
@@ -4,6 +4,8 @@ github.com/Shopify/toxiproxy v2.1.4+incompatible h1:TKdv8HiTLgE5wdJuEML90aBgNWso
 github.com/Shopify/toxiproxy v2.1.4+incompatible/go.mod h1:OXgGpZ6Cli1/URJOF1DMxUHB2q5Ap20/P/eIdh4G0pI=
 github.com/beorn7/perks v1.0.1 h1:VlbKKnNfV8bJzeqoa4cOKqO6bYr3WgKZxO8Z16+hsOM=
 github.com/beorn7/perks v1.0.1/go.mod h1:G2ZrVWU2WbWT9wwq4/hrbKbnv/1ERSJQ0ibhJ6rlkpw=
+github.com/caitlinelfring/go-env-default v1.1.0 h1:bhDfXmUolvcIGfQCX8qevQX8wxC54NGz0aimoUnhvDM=
+github.com/caitlinelfring/go-env-default v1.1.0/go.mod h1:tESXPr8zFPP/cRy3cwxrHBmjJIf2A1x/o4C9CET2rEk=
 github.com/cespare/xxhash/v2 v2.2.0 h1:DC2CZ1Ep5Y4k3ZQ899DldepgrayRUGE6BBZ/cd9Cj44=
 github.com/cespare/xxhash/v2 v2.2.0/go.mod h1:VGX0DQ3Q6kWi7AoAeZDth3/j3BFtOZR5XLFGgcrjCOs=
 github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
diff --git a/internal/proxy/healthchecker_test.go b/internal/proxy/healthchecker_test.go
index 9593763..803d7c5 100644
--- a/internal/proxy/healthchecker_test.go
+++ b/internal/proxy/healthchecker_test.go
@@ -6,6 +6,7 @@ import (
 	"testing"
 	"time"
 
+	"github.com/caitlinelfring/go-env-default"
 	"github.com/stretchr/testify/assert"
 	"go.uber.org/zap"
 )
@@ -22,7 +23,7 @@ func TestBasicHealthchecker(t *testing.T) {
 	defer cancel()
 
 	healtcheckConfig := RPCHealthcheckerConfig{
-		URL:              "https://cloudflare-eth.com",
+		URL:              env.GetDefault("RPC_GATEWAY_NODE_URL_1", "https://cloudflare-eth.com"),
 		Interval:         1 * time.Second,
 		Timeout:          2 * time.Second,
 		FailureThreshold: 1,
@@ -48,7 +49,7 @@ func TestBasicHealthchecker(t *testing.T) {
 
 func TestGasLeftCall(t *testing.T) {
 	client := &http.Client{}
-	url := "https://cloudflare-eth.com"
+	url := env.GetDefault("RPC_GATEWAY_NODE_URL_1", "https://cloudflare-eth.com")
 
 	result, err := performGasLeftCall(context.TODO(), client, url)
 	assert.Nil(t, err)
diff --git a/internal/proxy/manager_test.go b/internal/proxy/manager_test.go
index b009157..13cf1a2 100644
--- a/internal/proxy/manager_test.go
+++ b/internal/proxy/manager_test.go
@@ -5,6 +5,7 @@ import (
 	"testing"
 	"time"
 
+	"github.com/caitlinelfring/go-env-default"
 	"github.com/prometheus/client_golang/prometheus"
 	"github.com/stretchr/testify/assert"
 )
@@ -18,7 +19,7 @@ func TestHealthcheckManager(t *testing.T) {
 				Name: "Primary",
 				Connection: TargetConfigConnection{
 					HTTP: TargetConnectionHTTP{
-						URL: "https://cloudflare-eth.com",
+						URL: env.GetDefault("RPC_GATEWAY_NODE_URL_1", "https://cloudflare-eth.com"),
 					},
 				},
 			},
@@ -26,7 +27,7 @@ func TestHealthcheckManager(t *testing.T) {
 				Name: "StandBy",
 				Connection: TargetConfigConnection{
 					HTTP: TargetConnectionHTTP{
-						URL: "https://cloudflare-eth.com",
+						URL: env.GetDefault("RPC_GATEWAY_NODE_URL_1", "https://eth.public-rpc.com"),
 					},
 				},
 			},
@@ -65,7 +66,7 @@ func TestGetNextHealthyTargetIndexExcluding(t *testing.T) {
 				Name: "Primary",
 				Connection: TargetConfigConnection{
 					HTTP: TargetConnectionHTTP{
-						URL: "https://cloudflare-eth.com",
+						URL: env.GetDefault("RPC_GATEWAY_NODE_URL_1", "https://cloudflare-eth.com"),
 					},
 				},
 			},
diff --git a/internal/rpcgateway/rpcgateway_test.go b/internal/rpcgateway/rpcgateway_test.go
index b8f5f8a..6945fa6 100644
--- a/internal/rpcgateway/rpcgateway_test.go
+++ b/internal/rpcgateway/rpcgateway_test.go
@@ -11,6 +11,7 @@ import (
 	"testing"
 
 	toxiproxy "github.com/Shopify/toxiproxy/client"
+	"github.com/caitlinelfring/go-env-default"
 	"github.com/prometheus/client_golang/prometheus"
 	"github.com/stretchr/testify/assert"
 	"go.uber.org/zap"
@@ -77,7 +78,7 @@ func TestRpcGatewayFailover(t *testing.T) {
 	err := toxiClient.ResetState()
 	assert.Nil(t, err)
 
-	proxy, err := toxiClient.CreateProxy("cloudflare", "0.0.0.0:9991", ts.URL[7:])
+	proxy, err := toxiClient.CreateProxy("primary", "0.0.0.0:9991", ts.URL[7:])
 	assert.Nil(t, err)
 
 	_, err = proxy.AddToxic("latency_down", "latency", "downstream", 1.0, toxiproxy.Attributes{
@@ -92,7 +93,7 @@ func TestRpcGatewayFailover(t *testing.T) {
 
 	// config string
 	var tpl bytes.Buffer
-	tu := TestURL{"http://0.0.0.0:9991", "https://cloudflare-eth.com"}
+	tu := TestURL{"http://0.0.0.0:9991", env.GetDefault("RPC_GATEWAY_NODE_URL_1", "https://cloudflare-eth.com")}
 	tmpl, err := template.New("test").Parse(rpcGatewayConfig)
 	assert.Nil(t, err)