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-rw-r--r--gnu/packages/scanner.scm1
1 files changed, 1 insertions, 0 deletions
diff --git a/gnu/packages/scanner.scm b/gnu/packages/scanner.scm
index 462727bc59..75f5525d3d 100644
--- a/gnu/packages/scanner.scm
+++ b/gnu/packages/scanner.scm
@@ -112,6 +112,7 @@ package contains the library, but no drivers.")
     (name "sane-backends")
     (inputs
      `(("hplip" ,(@ (gnu packages cups) hplip-minimal))
+       ("libpng" ,libpng)               ; support ‘scanimage --format=png’
        ,@(package-inputs sane-backends-minimal)))
     (arguments
      (substitute-keyword-arguments (package-arguments sane-backends-minimal)