diff --git a/srcpkgs/sdunpack/template b/srcpkgs/sdunpack/template
index a9ebc67defb..02de2f60416 100644
--- a/srcpkgs/sdunpack/template
+++ b/srcpkgs/sdunpack/template
@@ -10,6 +10,11 @@ homepage="https://github.com/baskerville/sdunpack"
 distfiles="https://github.com/baskerville/sdunpack/archive/refs/tags/${version}.tar.gz"
 checksum=8398414775b2192e42d97b44b261b13a7500f9aa38ed99e26e150a3aa330ad89
 
+post_patch() {
+	# Upstream does not ship a lockfile yet
+	cargo generate-lockfile
+}
+
 post_install() {
 	vlicense LICENSE
 }