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-rw-r--r--gnu/packages/backup.scm2
1 files changed, 1 insertions, 1 deletions
diff --git a/gnu/packages/backup.scm b/gnu/packages/backup.scm
index fd17992ab3..67708138a6 100644
--- a/gnu/packages/backup.scm
+++ b/gnu/packages/backup.scm
@@ -1036,7 +1036,7 @@ precious backup space.
     (arguments
      `(#:tests? #f))                    ;no test
     (inputs
-     (list lzo libressl protobuf xz zlib))
+     (list lzo libressl protobuf-3.6 xz zlib))
     (home-page "http://zbackup.org")
     (synopsis "Versatile deduplicating backup tool")
     (description