diff --git a/gnu/packages/mail.scm b/gnu/packages/mail.scm
index 08a9a2946b..a94937e68c 100644
--- a/gnu/packages/mail.scm
+++ b/gnu/packages/mail.scm
@@ -1367,6 +1367,7 @@ (define-public isync
      `(("perl" ,perl)))
     (inputs
      `(("bdb" ,bdb)
+       ("cyrus-sasl" ,cyrus-sasl)
        ("openssl" ,openssl)
        ("zlib" ,zlib)))
     (home-page "http://isync.sourceforge.net/")