diff --git a/srcpkgs/mandown/template b/srcpkgs/mandown/template
index 8eaf3175a7b..964e5f2255f 100644
--- a/srcpkgs/mandown/template
+++ b/srcpkgs/mandown/template
@@ -1,7 +1,7 @@
 # Template file for 'mandown'
 pkgname=mandown
 version=0.1.3
-revision=1
+revision=2
 build_style=cargo
 short_desc="Create man pages from markdown markup"
 maintainer="Savoy <git@liberation.red>"
@@ -9,3 +9,8 @@ license="Apache-2.0"
 homepage="https://gitlab.com/kornelski/mandown"
 distfiles="https://gitlab.com/kornelski/mandown/-/archive/${version}/mandown-${version}.tar.gz"
 checksum=6ea919d2e4bf0d331a8f38730bd173852376f00d057f73bfb2180b731081b8db
+
+post_patch() {
+	# upstream does not ship a lockfile yet: https://gitlab.com/kornelski/mandown/-/merge_requests/1
+	cargo generate-lockfile
+}