diff --git a/package-lock.json b/package-lock.json
index 4a172edf..82c667ea 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,6 +1,6 @@
 {
   "name": "asciidoctor-pdf",
-  "version": "1.0.0-alpha.12",
+  "version": "1.0.0-alpha.13",
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
diff --git a/package.json b/package.json
index f73db0e3..bb5c1c4d 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "asciidoctor-pdf",
-  "version": "1.0.0-alpha.12",
+  "version": "1.0.0-alpha.13",
   "description": "A PDF converter for AsciiDoc based on Asciidoctor.js",
   "engines": {
     "node": ">=12",