diff --git a/core/build.gradle b/core/build.gradle
index 993d59f3..7d7ebd5a 100644
--- a/core/build.gradle
+++ b/core/build.gradle
@@ -11,7 +11,7 @@ dependencies {
     compile 'org.bouncycastle:bcprov-jdk15on:1.60'
     implementation 'com.lambdaworks:scrypt:1.4.0'
     implementation 'com.google.guava:guava:27.0.1-android'
-    compile 'com.google.protobuf:protobuf-java:3.5.1'
+    compile 'com.google.protobuf:protobuf-java:3.6.1'
     implementation 'com.squareup.okhttp3:okhttp:3.12.1'
     implementation 'org.slf4j:slf4j-api:1.7.25'
     implementation 'net.jcip:jcip-annotations:1.0'