diff --git a/.gitignore b/.gitignore
index 3a696efc..c0c091a2 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,3 +1,5 @@
 /build*
+/libdeflate-*-windows-*
+/libdeflate-*.tar.gz
 cscope*
 tags
diff --git a/scripts/gen-tarball.sh b/scripts/gen-tarball.sh
new file mode 100755
index 00000000..7ef43b3b
--- /dev/null
+++ b/scripts/gen-tarball.sh
@@ -0,0 +1,11 @@
+#!/bin/bash
+
+# Generate a source tarball from the git repository.
+
+commit=HEAD
+prefix="libdeflate-$(git describe $commit | sed 's/^v//')"
+tarball="${prefix}.tar.gz"
+
+git archive --format=tar --prefix="${prefix}/" "$commit" \
+	| libdeflate-gzip -12 > "$tarball"
+echo "Generated $tarball"