diff --git a/signing/sigstore/fulcio.go b/signing/sigstore/fulcio.go
index d0cf5ffd41..2ef1708b43 100644
--- a/signing/sigstore/fulcio.go
+++ b/signing/sigstore/fulcio.go
@@ -31,8 +31,8 @@ import (
 )
 
 const (
-	defaultFulcioAddr   = "https://v1.fulcio.sigstore.dev"
-	defaultOIDCIssuer   = "https://oauth2.sigstore.dev/auth"
+	defaultFulcioAddr   = options.DefaultFulcioURL
+	defaultOIDCIssuer   = options.DefaultOIDCIssuerURL
 	defaultOIDCClientID = "sigstore"
 )