diff --git a/src/helpers.rs b/src/helpers.rs
index 269557fc..7a7e565d 100644
--- a/src/helpers.rs
+++ b/src/helpers.rs
@@ -10,7 +10,7 @@ use bytes::Bytes;
 use cargo_toml::Manifest;
 use futures_util::stream::Stream;
 use log::debug;
-use once_cell::sync::OnceCell;
+use once_cell::sync::{Lazy, OnceCell};
 use reqwest::{tls, Client, ClientBuilder, Method, Response};
 use serde::Serialize;
 use tempfile::NamedTempFile;
@@ -55,6 +55,13 @@ pub fn cargo_home() -> Result<&'static Path, io::Error> {
         .map(ops::Deref::deref)
 }
 
+pub fn cratesio_url() -> &'static Url {
+    static CRATESIO: Lazy<Url, fn() -> Url> =
+        Lazy::new(|| url::Url::parse("https://github.com/rust-lang/crates.io-index").unwrap());
+
+    &*CRATESIO
+}
+
 /// Returned file is readable and writable.
 pub fn create_if_not_exist(path: impl AsRef<Path>) -> io::Result<fs::File> {
     let path = path.as_ref();
diff --git a/src/metafiles/cvs.rs b/src/metafiles/cvs.rs
index b56ab5fc..15121c69 100644
--- a/src/metafiles/cvs.rs
+++ b/src/metafiles/cvs.rs
@@ -1,12 +1,13 @@
 use std::{borrow::Cow, fmt, str::FromStr};
 
 use miette::Diagnostic;
-use once_cell::sync::Lazy;
 use semver::Version;
 use serde::{Deserialize, Deserializer, Serialize, Serializer};
 use thiserror::Error;
 use url::Url;
 
+use crate::cratesio_url;
+
 #[derive(Clone, Debug, Ord, PartialOrd, Eq, PartialEq)]
 pub struct CrateVersionSource {
     pub name: String,
@@ -23,10 +24,7 @@ pub enum Source {
 
 impl Source {
     pub fn cratesio_registry() -> Source {
-        static CRATESIO: Lazy<Url, fn() -> Url> =
-            Lazy::new(|| url::Url::parse("https://github.com/rust-lang/crates.io-index").unwrap());
-
-        Self::Registry(CRATESIO.clone())
+        Self::Registry(cratesio_url().clone())
     }
 }