diff --git a/guix-data-service/jobs/load-new-guix-revision.scm b/guix-data-service/jobs/load-new-guix-revision.scm
index b2fa6cc..7eb4425 100644
--- a/guix-data-service/jobs/load-new-guix-revision.scm
+++ b/guix-data-service/jobs/load-new-guix-revision.scm
@@ -2171,7 +2171,7 @@ SKIP LOCKED")
 
               (match (exec-query
                       conn
-                      "SELECT reltuples::integer FROM pg_class WHERE relname = 'derivation_inputs'")
+                      "SELECT reltuples::bigint FROM pg_class WHERE relname = 'derivation_inputs'")
                 (((rows))
                  ;; Don't attempt counting distinct values if there are too
                  ;; many rows, as that is far to slow and could use up all the