diff --git a/setup.py b/setup.py
index 1effa1b..fc112a9 100755
--- a/setup.py
+++ b/setup.py
@@ -198,6 +198,8 @@ def _download_and_extract(self, filename: str) -> pathlib.Path:
         source_url = "http://download.openzim.org/release/libzim"
         if self.is_nightly:
             source_url = f"http://download.openzim.org/nightly/{self.libzim_dl_version}"
+        if self.is_musl:
+            source_url = "http://tmp.kiwix.org/ci/"
         url = f"{source_url}/{fpath.name}"
 
         # download a local copy if none present