diff --git a/spack-environment/packages.yaml b/spack-environment/packages.yaml
index 034be0c1b6dfce0d8f80a2a6ab88aaa69ad53475..42fa99f496876cec19bf9562b8967d604e41b039 100644
--- a/spack-environment/packages.yaml
+++ b/spack-environment/packages.yaml
@@ -386,6 +386,8 @@ packages:
     require:
     - '@5.6.9'
     - cxxstd=20 -davix +python +scitokens-cpp
+    package_attributes:
+      url: https://github.com/xrootd/xrootd/releases/download/v5.6.9/xrootd-5.6.9.tar.gz
   zlib-api:
     require:
     - zlib-ng