diff --git a/hydra/bayfront.scm b/hydra/bayfront.scm
index b5a6c18..a6e4e34 100644
--- a/hydra/bayfront.scm
+++ b/hydra/bayfront.scm
@@ -960,7 +960,9 @@ add_header Content-Type text/plain;")))
                                                 output-hash ".narinfo")))
                            (not (file-exists? narinfo))))
                        (datastore-list-build-outputs
-                        (build-coordinator-datastore build-coordinator) uuid))))))))))
+                        (build-coordinator-datastore build-coordinator) uuid)))))))
+     (extra-environment-variables
+      '("GC_RETRY_SIGNALS=0")))))
 
 
 ;;;
@@ -1227,7 +1229,9 @@ add_header Content-Type text/plain;")))
                  (level 19)
                  (directory-max-size (* 400 GiB)))))
               (cached-compression-workers 8)
-              (cached-compression-nar-source "https://bishan.guix.gnu.org")))
+              (cached-compression-nar-source "https://bishan.guix.gnu.org")
+              (extra-environment-variables
+               '("GC_RETRY_SIGNALS=0"))))
 
     (service guix-build-coordinator-service-type
              %guix-build-coordinator-configuration)