diff --git a/debian/watch b/debian/watch
index 2f4ccf4..538e00d 100644
--- a/debian/watch
+++ b/debian/watch
@@ -1,3 +1,3 @@
 version=4
-opts="pgpmode=auto" \
+opts="pgpmode=auto" uversionmangle=s/(\d)\-?((pre|rc)\d*)$/$1~$2/" \
 https://download.savannah.gnu.org/releases/lzip/clzip/@PACKAGE@@ANY_VERSION@\.tar\.lz