diff --git a/.github/ISSUE_TEMPLATE/bug_report.yml b/.github/ISSUE_TEMPLATE/bug_report.yml
index f6c45dd..ec0fc4e 100644
--- a/.github/ISSUE_TEMPLATE/bug_report.yml
+++ b/.github/ISSUE_TEMPLATE/bug_report.yml
@@ -86,6 +86,7 @@ body:
       label: Memor version
       description: Which version of Memor are you using?
       options:
+        - Memor 1.0
         - Memor 0.9
         - Memor 0.8
         - Memor 0.7
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 03c4a18..3fbf1fd 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,6 +5,7 @@ The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/)
 and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.html).
 
 ## [Unreleased]
+## [1.0] - 2025-11-17
 ### Added
 - `Response` class `xml_tree` property
 - `Prompt` class `xml_tree` property
@@ -150,7 +151,8 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 - `PresetPromptTemplate` class
 
 
-[Unreleased]: https://github.com/openscilab/memor/compare/v0.9...dev
+[Unreleased]: https://github.com/openscilab/memor/compare/v1.0...dev
+[1.0]: https://github.com/openscilab/memor/compare/v0.9...v1.0
 [0.9]: https://github.com/openscilab/memor/compare/v0.8...v0.9
 [0.8]: https://github.com/openscilab/memor/compare/v0.7...v0.8
 [0.7]: https://github.com/openscilab/memor/compare/v0.6...v0.7
diff --git a/README.md b/README.md
index 902bb5d..35d9da5 100644
--- a/README.md
+++ b/README.md
@@ -73,9 +73,9 @@ In a nutshell, Memor makes it easy and effective to manage and reuse conversatio
 
 ### PyPI
 - Check [Python Packaging User Guide](https://packaging.python.org/installing/)
-- Run `pip install memor==0.9`
+- Run `pip install memor==1.0`
 ### Source code
-- Download [Version 0.9](https://github.com/openscilab/memor/archive/v0.9.zip) or [Latest Source](https://github.com/openscilab/memor/archive/dev.zip)
+- Download [Version 1.0](https://github.com/openscilab/memor/archive/v1.0.zip) or [Latest Source](https://github.com/openscilab/memor/archive/dev.zip)
 - Run `pip install .`
 
 ## Usage
diff --git a/SECURITY.md b/SECURITY.md
index 6f3cc75..9a3d2fd 100644
--- a/SECURITY.md
+++ b/SECURITY.md
@@ -4,8 +4,8 @@
 
 | Version       | Supported          |
 | ------------- | ------------------ |
-| 0.9           | :white_check_mark: |
-| < 0.9         | :x:                |
+| 1.0           | :white_check_mark: |
+| < 1.0         | :x:                |
 
 ## Reporting a vulnerability
 
diff --git a/memor/params.py b/memor/params.py
index b9c44b3..37b057b 100644
--- a/memor/params.py
+++ b/memor/params.py
@@ -1,7 +1,7 @@
 # -*- coding: utf-8 -*-
 """Memor parameters and constants."""
 from enum import Enum
-MEMOR_VERSION = "0.9"
+MEMOR_VERSION = "1.0"
 
 DATE_TIME_FORMAT = "%Y-%m-%d %H:%M:%S %z"
 
diff --git a/otherfiles/meta.yaml b/otherfiles/meta.yaml
index eb3db85..2cc48a3 100644
--- a/otherfiles/meta.yaml
+++ b/otherfiles/meta.yaml
@@ -1,5 +1,5 @@
 {% set name = "memor" %}
-{% set version = "0.9" %}
+{% set version = "1.0" %}
 
 package:
     name: {{ name|lower }}
@@ -18,6 +18,7 @@ requirements:
         - python >=3.7
     run:
         - python >=3.7
+        - defusedxml >=0.7.1
 about:
     home: https://github.com/openscilab/memor
     license: MIT
diff --git a/otherfiles/version_check.py b/otherfiles/version_check.py
index e8d70ad..ccc67b9 100644
--- a/otherfiles/version_check.py
+++ b/otherfiles/version_check.py
@@ -4,7 +4,7 @@
 import sys
 import codecs
 Failed = 0
-MEMOR_VERSION = "0.9"
+MEMOR_VERSION = "1.0"
 
 
 SETUP_ITEMS = [
diff --git a/setup.py b/setup.py
index 65db1fb..aaa8297 100644
--- a/setup.py
+++ b/setup.py
@@ -35,14 +35,14 @@ def read_description() -> str:
     name='memor',
     packages=[
         'memor', ],
-    version='0.9',
+    version='1.0',
     description='Memor: Reproducible Structured Memory for LLMs',
     long_description=read_description(),
     long_description_content_type='text/markdown',
     author='Memor Development Team',
     author_email='memor@openscilab.com',
     url='https://github.com/openscilab/memor',
-    download_url='https://github.com/openscilab/memor/tarball/v0.9',
+    download_url='https://github.com/openscilab/memor/tarball/v1.0',
     keywords="llm memory management conversational history ai agent",
     project_urls={
             'Source': 'https://github.com/openscilab/memor',