diff --git a/build.gradle b/build.gradle
index 92f9748e..b5678cd4 100644
--- a/build.gradle
+++ b/build.gradle
@@ -55,7 +55,7 @@ dependencies {
   implementation 'commons-fileupload:commons-fileupload:1.4'
   implementation 'commons-logging:commons-logging:1.2'
   implementation 'commons-net:commons-net:3.6'
-  implementation 'javax.mail:javax.mail-api:1.6.2'
+  implementation 'com.sun.mail:javax.mail:1.6.2'
   implementation 'javax.servlet:javax.servlet-api:4.0.1'
   implementation 'org.ccil.cowan.tagsoup:tagsoup:1.2.1'
   implementation 'org.eclipse.jetty:jetty-servlet:9.4.27.v20200227'