diff --git a/tools/pkg/repo/create.py b/tools/pkg/repo/create.py
index 2fab46147c2..161c4bc7d23 100644
--- a/tools/pkg/repo/create.py
+++ b/tools/pkg/repo/create.py
@@ -488,7 +488,7 @@ def rpm(
     def _create_repo_file(create_repo_path, url_suffix):
         ctx.info(f"Creating '{repo_file_path.relative_to(repo_path)}' file ...")
         if nightly_build_from:
-            base_url = f"salt-dev/{nightly_build_from}/{datetime.utcnow().strftime("%Y-%m-%d")}"
+            base_url = f"salt-dev/{nightly_build_from}/{datetime.utcnow().strftime("%Y-%m-%d")}/"
             repo_file_contents = "[salt-nightly-repo]"
         elif "rc" in salt_version:
             base_url = "salt_rc/"