diff --git a/src/cuirass/http.scm b/src/cuirass/http.scm
index 2d23aac7ff1c7bfcfeb3de288a92c024e53a1e6c..f721917cfc194c553e16027a32f8eede51bc91ee 100644
--- a/src/cuirass/http.scm
+++ b/src/cuirass/http.scm
@@ -87,6 +87,7 @@
                      (build-status started)))))
 
   `((#:id . ,(assq-ref build #:id))
+    (#:evaluation . ,(assq-ref build #:eval-id))
     (#:jobset . ,(assq-ref build #:specification))
     (#:job . ,(assq-ref build #:job-name))