diff --git a/LICENSE b/LICENSE
new file mode 100644
index 0000000..5f67b76
--- /dev/null
+++ b/LICENSE
@@ -0,0 +1,31 @@
+twitter-openapi License
+
+Copyright (c) 2023 yuki
+
+<https://yuki0311.com/>
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+The Software shall not be used for any activity that involves the following types
+of behavior, commonly known as spam:
+
+1. Sending unsolicited or excessive messages or posts.
+2. Aggressively following, unfollowing, or liking tweets to artificially boost engagement.
+3. Engaging in aggressive automated actions that disrupt or annoy other users.
+4. Distributing false or misleading information.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
diff --git a/LICENSE.txt b/LICENSE.AGPL
similarity index 99%
rename from LICENSE.txt
rename to LICENSE.AGPL
index dba13ed..bae94e1 100644
--- a/LICENSE.txt
+++ b/LICENSE.AGPL
@@ -1,7 +1,7 @@
                     GNU AFFERO GENERAL PUBLIC LICENSE
                        Version 3, 19 November 2007
 
- Copyright (C) 2007 Free Software Foundation, Inc. <http://fsf.org/>
+ Copyright (C) 2007 Free Software Foundation, Inc. <https://fsf.org/>
  Everyone is permitted to copy and distribute verbatim copies
  of this license document, but changing it is not allowed.
 
@@ -643,7 +643,7 @@ the "copyright" line and a pointer to where the full notice is found.
     GNU Affero General Public License for more details.
 
     You should have received a copy of the GNU Affero General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 
 Also add information on how to contact you by electronic and paper mail.
 
@@ -658,4 +658,4 @@ specific requirements.
   You should also get your employer (if you work as a programmer) or school,
 if any, to sign a "copyright disclaimer" for the program, if necessary.
 For more information on this, and how to apply and follow the GNU AGPL, see
-<http://www.gnu.org/licenses/>.
+<https://www.gnu.org/licenses/>.
\ No newline at end of file
diff --git a/README.md b/README.md
index 6e49199..60e7881 100644
--- a/README.md
+++ b/README.md
@@ -33,4 +33,7 @@ python tools/build.py
 
 ## License
 
-[agpl-3.0](./LICENSE.txt)
+This project is dual licensed. You can choose one of the following licenses:
+
+- [Custom License](./LICENSE)
+- [GNU Affero General Public License v3.0](./LICENSE.AGPL)