diff --git a/tests/e2e.rs b/tests/e2e.rs
index c611cf8..7ec347e 100644
--- a/tests/e2e.rs
+++ b/tests/e2e.rs
@@ -252,7 +252,7 @@ mod test {
         let path = PathBuf::from(std::env::var("CARGO_MANIFEST_DIR").unwrap());
         let cargo_toml = path.join("Cargo.toml");
         let cargo_toml_str = if cfg!(target_os = "windows") {
-            format!("http://localhost:8080/{}", cargo_toml.to_string_lossy()).replace('\\', "/")
+            format!("http://localhost:8080/{}", cargo_toml.to_string_lossy()).replace(':', "%3A")
         } else {
             format!("http://localhost:8080{}", cargo_toml.to_string_lossy())
         };