diff --git a/LICENSE.md b/LICENSE.md
new file mode 100644
index 000000000..bc5674fe4
--- /dev/null
+++ b/LICENSE.md
@@ -0,0 +1,29 @@
+Copyright © 2008 by Yii Software (https://www.yiiframework.com/)
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions
+are met:
+
+ * Redistributions of source code must retain the above copyright
+   notice, this list of conditions and the following disclaimer.
+ * Redistributions in binary form must reproduce the above copyright
+   notice, this list of conditions and the following disclaimer in
+   the documentation and/or other materials provided with the
+   distribution.
+ * Neither the name of Yii Software nor the names of its
+   contributors may be used to endorse or promote products derived
+   from this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+POSSIBILITY OF SUCH DAMAGE.
diff --git a/code-of-conduct.md b/code-of-conduct.md
deleted file mode 100644
index 82fdef144..000000000
--- a/code-of-conduct.md
+++ /dev/null
@@ -1,68 +0,0 @@
-Yii Contributor Code of Conduct
-=======================
-
-## Our Pledge
-
-As contributors and maintainers of this project, and in order to keep Yii community open and welcoming, we ask to respect all community members.
-
-## Our Standards
-
-Examples of behavior that contributes to creating a positive environment include:
-
-* Using welcoming and inclusive language
-* Being respectful of differing viewpoints and experiences
-* Gracefully accepting constructive criticism
-* Focusing on what is best for the community
-* Showing empathy towards other community members
-
-Examples of unacceptable behavior by participants include:
-
-* The use of sexualized language or imagery and unwelcome sexual attention or
-  advances
-* Personal attacks
-* Trolling or insulting/derogatory comments, and personal or political attacks
-* Public or private harassment
-* Publishing other's private information, such as physical or electronic
-  addresses, without explicit permission
-* Other conduct which could reasonably be considered inappropriate in
-  a professional setting
-
-## Our Responsibilities
-
-Project maintainers are responsible for clarifying the standards of acceptable
-behavior and are expected to take appropriate and fair corrective action in response
-to any instances of unacceptable behavior.
-
-Project maintainers have the right and responsibility to remove, edit, or reject comments,
-commits, code, wiki edits, issues, and other contributions that are not aligned to this
-Code of Conduct, or to ban temporarily or permanently any contributor for other behaviors
-that they deem inappropriate, threatening, offensive, or harmful.
-
-## Scope
-
-This Code of Conduct applies both within project spaces and in public spaces when
-an individual is representing the project or its community. Examples of representing
-a project or community include posting via an official social media account,
-within project GitHub, official forum or acting as an appointed representative at
-an online or offline event.
-
-## Enforcement
-
-Instances of abusive, harassing, or otherwise unacceptable behavior may be reported
-by contacting core team members. All complaints will be reviewed and investigated
-and will result in a response that is deemed necessary and appropriate to the circumstances.
-The project team is obligated to maintain confidentiality with regard to the reporter of
-an incident. Further details of specific enforcement policies may be posted separately.
-
-Project maintainers who do not follow or enforce the Code of Conduct in good faith
-may face temporary or permanent repercussions as determined by other members of
-the project's leadership.
-
-## Attribution
-
-This Code of Conduct is adapted from the [Contributor Covenant][homepage],
-version 1.4.0, available at
-[http://contributor-covenant.org/version/1/4/][version]
-
-[homepage]: http://contributor-covenant.org
-[version]: http://contributor-covenant.org/version/1/4/