diff --git a/build-aux/hydra/guix.scm b/build-aux/hydra/guix.scm
index a8d740e03c..f2107479e0 100644
--- a/build-aux/hydra/guix.scm
+++ b/build-aux/hydra/guix.scm
@@ -43,6 +43,7 @@
              (guix build-system gnu)
              (gnu packages package-management)
              (srfi srfi-1)
+             (srfi srfi-26)
              (ice-9 match))
 
 ;; XXX: Debugging hack: since `hydra-eval-guile-jobs' redirects the output