diff --git a/build-constraints.yaml b/build-constraints.yaml
index f44df6a5..a450a570 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -4857,6 +4857,9 @@ packages:
         - run-st
         - zigzag
 
+    "Markus  Schirp <mbj@schirp-dso.com> @mbj":
+        - stratosphere
+
     "Grandfathered dependencies":
         - BiobaseNewick
         - Boolean