diff --git a/java/build.gradle b/java/build.gradle
index 8d5987f..15f4636 100644
--- a/java/build.gradle
+++ b/java/build.gradle
@@ -12,7 +12,8 @@
 }
 
 dependencies {
-   implementation 'commons-codec:commons-codec:1.15' 
+    implementation 'commons-codec:commons-codec:1.15' 
+    implementation 'com.eatthepath:java-otp:0.2.0'
 }
 
 application {