diff --git a/.claude-plugin/marketplace.json b/.claude-plugin/marketplace.json
index 267d7a6..6b196fa 100644
--- a/.claude-plugin/marketplace.json
+++ b/.claude-plugin/marketplace.json
@@ -7,7 +7,7 @@
   },
   "metadata": {
     "description": "StackOne agent plugins — integration infrastructure for AI agents with 200+ connectors, MCP, A2A, SDKs, and prompt injection defense. One plugin per skill.",
-    "version": "3.1.0",
+    "version": "3.1.1",
     "homepage": "https://stackone.com",
     "repository": "https://github.com/StackOneHQ/agent-plugins",
     "pluginRoot": "./plugins"
@@ -17,7 +17,7 @@
       "name": "stackone-platform",
       "source": "./plugins/integrations/stackone-platform",
       "description": "Platform operations — API keys, accounts, logs, debugging, webhook configuration.",
-      "version": "3.1.0",
+      "version": "3.1.1",
       "category": "integrations",
       "tags": [
         "stackone",
@@ -35,7 +35,7 @@
       "name": "stackone-connect",
       "source": "./plugins/integrations/stackone-connect",
       "description": "Account linking with Connect Sessions and the Hub React component.",
-      "version": "3.1.0",
+      "version": "3.1.1",
       "category": "integrations",
       "tags": [
         "stackone",
@@ -53,7 +53,7 @@
       "name": "stackone-agents",
       "source": "./plugins/integrations/stackone-agents",
       "description": "Build AI agents that call StackOne-linked accounts via TypeScript/Python SDK, MCP, or A2A.",
-      "version": "3.1.0",
+      "version": "3.1.1",
       "category": "integrations",
       "tags": [
         "stackone",
@@ -73,7 +73,7 @@
       "name": "stackone-connectors",
       "source": "./plugins/integrations/stackone-connectors",
       "description": "Discover StackOne's 200+ connectors and 9,000+ actions across HRIS, ATS, CRM, LMS, and more.",
-      "version": "3.1.0",
+      "version": "3.1.1",
       "category": "integrations",
       "tags": [
         "stackone",
@@ -93,7 +93,7 @@
       "name": "stackone-cli",
       "source": "./plugins/integrations/stackone-cli",
       "description": "Build and deploy custom StackOne connectors using the CLI and Connector Engine.",
-      "version": "3.1.0",
+      "version": "3.1.1",
       "category": "integrations",
       "tags": [
         "stackone",
@@ -110,7 +110,7 @@
       "name": "stackone-unified-connectors",
       "source": "./plugins/integrations/stackone-unified-connectors",
       "description": "Build unified/schema-based connectors that transform provider data into standardized schemas.",
-      "version": "3.1.0",
+      "version": "3.1.1",
       "category": "integrations",
       "tags": [
         "stackone",
@@ -127,7 +127,7 @@
       "name": "stackone-defender",
       "source": "./plugins/security/stackone-defender",
       "description": "Prompt-injection and jailbreak detection for tool results via on-device ML classifier.",
-      "version": "3.1.0",
+      "version": "3.1.1",
       "category": "security",
       "tags": [
         "stackone",
diff --git a/.release-please-manifest.json b/.release-please-manifest.json
index ada7355..b4b8d0f 100644
--- a/.release-please-manifest.json
+++ b/.release-please-manifest.json
@@ -1,3 +1,3 @@
 {
-  ".": "3.1.0"
+  ".": "3.1.1"
 }
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 2c7c5f4..6eea774 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,12 @@
 # Changelog
 
+## [3.1.1](https://github.com/StackOneHQ/agent-plugins/compare/stackone-agent-plugins-v3.1.0...stackone-agent-plugins-v3.1.1) (2026-08-31)
+
+
+### Bug Fixes
+
+* **ENG-2103:** pin the antigravity Defender transitive deps ([#33](https://github.com/StackOneHQ/agent-plugins/issues/33)) ([494217b](https://github.com/StackOneHQ/agent-plugins/commit/494217b806e6d1e4fc05fdb7016c456837b200f9))
+
 ## [3.1.0](https://github.com/StackOneHQ/agent-plugins/compare/stackone-agent-plugins-v3.0.0...stackone-agent-plugins-v3.1.0) (2026-08-20)
 
 
diff --git a/plugins/integrations/stackone-agents/.claude-plugin/plugin.json b/plugins/integrations/stackone-agents/.claude-plugin/plugin.json
index 8c49e7f..c9747f3 100644
--- a/plugins/integrations/stackone-agents/.claude-plugin/plugin.json
+++ b/plugins/integrations/stackone-agents/.claude-plugin/plugin.json
@@ -1,6 +1,6 @@
 {
   "name": "stackone-agents",
-  "version": "3.1.0",
+  "version": "3.1.1",
   "description": "Build AI agents that call StackOne-linked accounts using TypeScript SDK, Python SDK, MCP server, or A2A protocol. Supports OpenAI, Vercel AI SDK, Claude, LangChain, CrewAI, PydanticAI.",
   "author": {
     "name": "StackOne",
diff --git a/plugins/integrations/stackone-cli/.claude-plugin/plugin.json b/plugins/integrations/stackone-cli/.claude-plugin/plugin.json
index a03ec8a..6b26613 100644
--- a/plugins/integrations/stackone-cli/.claude-plugin/plugin.json
+++ b/plugins/integrations/stackone-cli/.claude-plugin/plugin.json
@@ -1,6 +1,6 @@
 {
   "name": "stackone-cli",
-  "version": "3.1.0",
+  "version": "3.1.1",
   "description": "Build and deploy custom StackOne connectors using the CLI and Connector Engine. Covers the full workflow from init through deployment.",
   "author": {
     "name": "StackOne",
diff --git a/plugins/integrations/stackone-connect/.claude-plugin/plugin.json b/plugins/integrations/stackone-connect/.claude-plugin/plugin.json
index 248c05c..f870a90 100644
--- a/plugins/integrations/stackone-connect/.claude-plugin/plugin.json
+++ b/plugins/integrations/stackone-connect/.claude-plugin/plugin.json
@@ -1,6 +1,6 @@
 {
   "name": "stackone-connect",
-  "version": "3.1.0",
+  "version": "3.1.1",
   "description": "Account linking with StackOne Connect Sessions and the Hub React component — full flow from session creation to webhook handling.",
   "author": {
     "name": "StackOne",
diff --git a/plugins/integrations/stackone-connectors/.claude-plugin/plugin.json b/plugins/integrations/stackone-connectors/.claude-plugin/plugin.json
index 3bd9df4..46c81d2 100644
--- a/plugins/integrations/stackone-connectors/.claude-plugin/plugin.json
+++ b/plugins/integrations/stackone-connectors/.claude-plugin/plugin.json
@@ -1,6 +1,6 @@
 {
   "name": "stackone-connectors",
-  "version": "3.1.0",
+  "version": "3.1.1",
   "description": "Discover StackOne's 200+ connectors and 9,000+ actions across HRIS, ATS, CRM, LMS, ticketing, messaging, documents, IAM, and accounting.",
   "author": {
     "name": "StackOne",
diff --git a/plugins/integrations/stackone-platform/.claude-plugin/plugin.json b/plugins/integrations/stackone-platform/.claude-plugin/plugin.json
index bfdd2d4..59a8400 100644
--- a/plugins/integrations/stackone-platform/.claude-plugin/plugin.json
+++ b/plugins/integrations/stackone-platform/.claude-plugin/plugin.json
@@ -1,6 +1,6 @@
 {
   "name": "stackone-platform",
-  "version": "3.1.0",
+  "version": "3.1.1",
   "description": "Manage StackOne resources — API keys, linked accounts, logs, debugging, and webhook configuration.",
   "author": {
     "name": "StackOne",
diff --git a/plugins/integrations/stackone-unified-connectors/.claude-plugin/plugin.json b/plugins/integrations/stackone-unified-connectors/.claude-plugin/plugin.json
index f8e3ba8..4131ee5 100644
--- a/plugins/integrations/stackone-unified-connectors/.claude-plugin/plugin.json
+++ b/plugins/integrations/stackone-unified-connectors/.claude-plugin/plugin.json
@@ -1,6 +1,6 @@
 {
   "name": "stackone-unified-connectors",
-  "version": "3.1.0",
+  "version": "3.1.1",
   "description": "Build unified/schema-based connectors that transform provider data into standardized schemas — field mapping, enum mapping, pagination, and scope patterns.",
   "author": {
     "name": "StackOne",
diff --git a/plugins/security/stackone-defender/.claude-plugin/plugin.json b/plugins/security/stackone-defender/.claude-plugin/plugin.json
index 27f7b68..1b9fec0 100644
--- a/plugins/security/stackone-defender/.claude-plugin/plugin.json
+++ b/plugins/security/stackone-defender/.claude-plugin/plugin.json
@@ -1,6 +1,6 @@
 {
   "name": "stackone-defender",
-  "version": "3.1.0",
+  "version": "3.1.1",
   "description": "Prompt-injection and jailbreak detection for tool results via on-device ML classifier. Installs as a PostToolUse hook and flags risky content to Claude.",
   "author": {
     "name": "StackOne",
diff --git a/plugins/security/stackone-defender/package.json b/plugins/security/stackone-defender/package.json
index b968e30..e4ce3a6 100644
--- a/plugins/security/stackone-defender/package.json
+++ b/plugins/security/stackone-defender/package.json
@@ -1,6 +1,6 @@
 {
   "name": "stackone-defender",
-  "version": "3.1.0",
+  "version": "3.1.1",
   "description": "On-device prompt-injection detection for Claude Code tool results.",
   "private": true,
   "type": "module",