diff --git a/README.md b/README.md
new file mode 100644
index 0000000..70b318c
--- /dev/null
+++ b/README.md
@@ -0,0 +1,6 @@
+Add this line to Grasscutter build.gradle and recompile.
+```
+implementation 'io.jsonwebtoken:jjwt-api:0.11.3'
+runtimeOnly 'io.jsonwebtoken:jjwt-impl:0.11.3', 'io.jsonwebtoken:jjwt-gson:0.11.3'
+implementation 'org.springframework.security:spring-security-crypto:5.6.3'
+```
\ No newline at end of file