diff --git a/.gitignore b/.gitignore
index 266ebc3..2bf209e 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1 +1,2 @@
 SOURCES/btrd-0.5.2-vendor.tar.gz
+SOURCES/btrd-0.5.2.crate
diff --git a/.rust-btrd.metadata b/.rust-btrd.metadata
index 9c0c3e6..b11ba12 100644
--- a/.rust-btrd.metadata
+++ b/.rust-btrd.metadata
@@ -1 +1,2 @@
 0e13f1c21917730315d52da015e2f71472ec7c8a  SOURCES/btrd-0.5.2-vendor.tar.gz
+4a5ec8946614dc51b996d6a70e87d912134b8dcd  SOURCES/btrd-0.5.2.crate
diff --git a/SOURCES/btrd-0.5.2.crate b/SOURCES/btrd-0.5.2.crate
deleted file mode 100644
index 5b22e6d..0000000
Binary files a/SOURCES/btrd-0.5.2.crate and /dev/null differ
diff --git a/SOURCES/update-vendor-tarball.sh b/SOURCES/update-vendor-tarball.sh
new file mode 100755
index 0000000..16cd73d
--- /dev/null
+++ b/SOURCES/update-vendor-tarball.sh
@@ -0,0 +1,25 @@
+#!/bin/sh
+
+name='btrd'
+specfile="rust-${name}.spec"
+version=$(rpm -q --qf '%{VERSION}\n' --specfile "$specfile" | head -1)
+nv="${name}-${version}"
+crate="${nv}.crate"
+vendor_tarball="${nv}-vendor.tar.gz"
+
+if [ -f "$vendor_tarball" ]; then
+  echo "${vendor_tarball} already exists, aborting"
+  exit 1
+fi
+
+[ -f "$crate" ] || spectool -g "$specfile"
+tardir="$PWD"
+workdir=$(mktemp -d)
+trap 'rm -rf "$workdir"' EXIT
+
+tar xvzf "$tardir/$crate" -C "$workdir"
+(cd "${workdir}/${nv}" && \
+  cargo vendor && \
+  tar cvzf "${tardir}/${vendor_tarball}" vendor/)
+
+exit 0