diff --git a/internal/config/load.go b/internal/config/load.go
index 44bcf8e3ce87953b9c3589cacaf2fe8a248e97aa..77f53356b1e529cb5592366e1f2f3a8d757a315f 100644
--- a/internal/config/load.go
+++ b/internal/config/load.go
@@ -17,7 +17,7 @@ import (
 	"github.com/charmbracelet/crush/internal/log"
 )
 
-const catwalkURL = "https://catwalk.charm.sh"
+const defaultCatwalkURL = "https://catwalk.charm.sh"
 
 // LoadReader config via io.Reader.
 func LoadReader(fd io.Reader) (*Config, error) {
diff --git a/internal/config/provider.go b/internal/config/provider.go
index ba02f9d8e1bc0f2ec58c2ed3e736a87e1d7a614b..e1efc503cac556f529f390c63d7dde51870c729b 100644
--- a/internal/config/provider.go
+++ b/internal/config/provider.go
@@ -1,6 +1,7 @@
 package config
 
 import (
+	"cmp"
 	"encoding/json"
 	"fmt"
 	"log/slog"
@@ -74,6 +75,7 @@ func loadProvidersFromCache(path string) ([]catwalk.Provider, error) {
 }
 
 func Providers() ([]catwalk.Provider, error) {
+	catwalkURL := cmp.Or(os.Getenv("CATWALK_URL"), defaultCatwalkURL)
 	client := catwalk.NewWithURL(catwalkURL)
 	path := providerCacheFileData()
 	return loadProvidersOnce(client, path)