diff --git a/CHANGELOG.md b/CHANGELOG.md
index 157452f..3161c57 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,15 @@
 
 All notable changes to this project will be documented in this file.
 
+## [1.3.8] - 2026-01-31
+
+### Fixed
+
+- **Collection Sort Field:** `create_collection` now sets default `sort` value
+  - Was: `sort` column left NULL, causing frontend error "Cannot read properties of null (reading 'field')"
+  - Now: Sets `{"field": "index", "direction": "asc"}` as default
+  - Outline frontend requires this field to render collections
+
 ## [1.3.7] - 2026-01-31
 
 ### Fixed
diff --git a/CLAUDE.md b/CLAUDE.md
index d9cffcb..81c9d30 100644
--- a/CLAUDE.md
+++ b/CLAUDE.md
@@ -6,7 +6,7 @@ This file provides guidance to Claude Code (claude.ai/code) when working with co
 
 MCP server for direct PostgreSQL access to Outline Wiki database. Follows patterns established by `mcp-desk-crm-sql-v3`.
 
-**Version:** 1.3.7
+**Version:** 1.3.8
 **Total Tools:** 164 tools across 33 modules
 **Production:** hub.descomplicar.pt (via SSH tunnel)
 
diff --git a/CONTINUE.md b/CONTINUE.md
index 6c6a09b..f85fb75 100644
--- a/CONTINUE.md
+++ b/CONTINUE.md
@@ -1,7 +1,7 @@
 # MCP Outline PostgreSQL - Continuacao de Testes
 
 **Ultima Sessao:** 2026-01-31 (actualizado)
-**Versao Actual:** 1.3.7
+**Versao Actual:** 1.3.8
 **Progresso:** ~95/164 tools testadas (58%) - **CÓDIGO VALIDADO**
 
 ---
diff --git a/package-lock.json b/package-lock.json
index b43f879..4c19042 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "mcp-outline-postgresql",
-  "version": "1.3.7",
+  "version": "1.3.8",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "mcp-outline-postgresql",
-      "version": "1.3.7",
+      "version": "1.3.8",
       "license": "MIT",
       "dependencies": {
         "@modelcontextprotocol/sdk": "^1.0.0",
diff --git a/package.json b/package.json
index 7817af8..124fc05 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "mcp-outline-postgresql",
-  "version": "1.3.7",
+  "version": "1.3.8",
   "description": "MCP Server for Outline Wiki via PostgreSQL direct access",
   "main": "dist/index.js",
   "scripts": {
diff --git a/src/index-http.ts b/src/index-http.ts
index 9d62425..586a504 100644
--- a/src/index-http.ts
+++ b/src/index-http.ts
@@ -68,7 +68,7 @@ async function main() {
         JSON.stringify({
           status: 'ok',
           transport: 'streamable-http',
-          version: '1.3.7',
+          version: '1.3.8',
           sessions: sessions.size,
           stateful: STATEFUL,
           tools: allTools.length
@@ -101,7 +101,7 @@ async function main() {
         // Create MCP server
         const server = createMcpServer(pgClient.getPool(), {
           name: 'mcp-outline-http',
-          version: '1.3.7'
+          version: '1.3.8'
         });
 
         // Track session if stateful
diff --git a/src/index.ts b/src/index.ts
index 0ee2e44..78368db 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -39,7 +39,7 @@ async function main() {
   // Create MCP server with shared configuration
   const server = createMcpServer(pgClient.getPool(), {
     name: 'mcp-outline-postgresql',
-    version: '1.3.7'
+    version: '1.3.8'
   });
 
   // Connect stdio transport
diff --git a/src/server/create-server.ts b/src/server/create-server.ts
index 16d1b0f..cb55769 100644
--- a/src/server/create-server.ts
+++ b/src/server/create-server.ts
@@ -122,7 +122,7 @@ export function createMcpServer(
 ): Server {
   const server = new Server({
     name: config.name || 'mcp-outline-postgresql',
-    version: config.version || '1.3.7'
+    version: config.version || '1.3.8'
   });
 
   // Set capabilities (required for MCP v2.2+)
diff --git a/src/tools/collections.ts b/src/tools/collections.ts
index 9a0165d..6b4d0e7 100644
--- a/src/tools/collections.ts
+++ b/src/tools/collections.ts
@@ -272,12 +272,12 @@ export const collectionsTools: BaseTool<any>[] = [
         const query = `
           INSERT INTO collections (
             id, name, "urlId", "teamId", "createdById", description, icon, color,
-            permission, sharing, "maintainerApprovalRequired", index, "createdAt", "updatedAt"
+            permission, sharing, "maintainerApprovalRequired", index, sort, "createdAt", "updatedAt"
           )
-          VALUES (gen_random_uuid(), $1, $2, $3, $4, $5, $6, $7, $8, $9, false, $10, NOW(), NOW())
+          VALUES (gen_random_uuid(), $1, $2, $3, $4, $5, $6, $7, $8, $9, false, $10, '{"field": "index", "direction": "asc"}', NOW(), NOW())
           RETURNING
             id, "urlId", name, description, icon, color, index, permission,
-            sharing, "teamId", "createdById", "createdAt", "updatedAt"
+            sharing, "teamId", "createdById", "createdAt", "updatedAt", sort
         `;
 
         const result = await pool.query(query, [