diff --git a/package-lock.json b/package-lock.json
index e008181de..c513b2523 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "@opengsd/gsd-core",
-  "version": "1.3.0",
+  "version": "1.3.1-dev.0",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "@opengsd/gsd-core",
-      "version": "1.3.0",
+      "version": "1.3.1-dev.0",
       "license": "MIT",
       "dependencies": {
         "@anthropic-ai/claude-agent-sdk": "^0.2.84",
diff --git a/package.json b/package.json
index 8bd3b136d..042fdcca0 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@opengsd/gsd-core",
-  "version": "1.3.0",
+  "version": "1.3.1-dev.0",
   "description": "GSD Core is a meta-prompting, context engineering, and spec-driven development system for AI coding agents.",
   "bin": {
     "gsd-core": "bin/install.js",