diff --git a/debian/control b/debian/control
index 00cf4382..7a2c7faa 100644
--- a/debian/control
+++ b/debian/control
@@ -42,6 +42,7 @@ Package: aptly
 Architecture: any
 Depends: bzip2, xz-utils, gnupg, gpgv, ${shlibs:Depends}, ${misc:Depends}
 Suggests: graphviz
+Conflicts: gnupg1
 Built-Using: ${misc:Built-Using}
 Description: Swiss army knife for Debian repository management - main package
  It offers several features making it easy to manage Debian package