diff --git a/build.gradle b/build.gradle
index 904d15f..c3e92ce 100644
--- a/build.gradle
+++ b/build.gradle
@@ -57,7 +57,10 @@
     compile group: 'org.apache.poi', name: 'poi-ooxml-schemas', version: '3.10.1'
     compile group: 'org.apache.poi', name: 'poi-scratchpad', version: '3.10.1'
     compile 'com.supwisdom:payapi-sdk:e4bf762'
+    compile group: 'org.springframework.security.oauth', name: 'spring-security-oauth2', version: '2.3.4.RELEASE'
 
+
+    implementation 'com.github.penggle:kaptcha:2.3.2'
     implementation 'org.springframework.boot:spring-boot-devtools'
     implementation 'org.springframework.boot:spring-boot-starter-tomcat'
     implementation 'org.springframework.boot:spring-boot-starter-data-redis'