diff --git a/guix-data-service/database.scm b/guix-data-service/database.scm
index 8298b93..60115ad 100644
--- a/guix-data-service/database.scm
+++ b/guix-data-service/database.scm
@@ -74,7 +74,7 @@
 (define* (make-postgresql-connection-channel name
                                              #:key
                                              (statement-timeout #f)
-                                             (threads 4))
+                                             (threads 2))
   (parameterize (((@@ (fibers internal) current-fiber) #f))
     (let ((channel (make-channel)))
       (for-each