diff --git a/gscan2pdf.changes b/gscan2pdf.changes
index 39dfaeb..b362f78 100644
--- a/gscan2pdf.changes
+++ b/gscan2pdf.changes
@@ -1,3 +1,8 @@
+-------------------------------------------------------------------
+Tue Oct 27 16:16:24 UTC 2020 - Sauerlandlinux@gmx.de
+
+- Add Recommends on pdftk for PDF encryption
+
 -------------------------------------------------------------------
 Sat Aug  8 18:49:33 UTC 2020 - malcolmlewis@opensuse.org
 
diff --git a/gscan2pdf.spec b/gscan2pdf.spec
index e6bfd4d..eba6382 100644
--- a/gscan2pdf.spec
+++ b/gscan2pdf.spec
@@ -54,6 +54,7 @@ Recommends:     djvulibre
 Recommends:     gocr
 Recommends:     tesseract-ocr
 Recommends:     tiff
+Recommends:     pdftk
 BuildArch:      noarch
 %{perl_requires}