diff --git a/build.gradle b/build.gradle
index c2a00e4b..5a768f27 100755
--- a/build.gradle
+++ b/build.gradle
@@ -41,8 +41,8 @@ dependencies {
     annotationProcessor "com.google.auto.value:auto-value:1.6.2"
     shadow "com.google.errorprone:error_prone_annotations:2.3.1"
     shadow "com.google.guava:guava:27.0.1-jre"
-    shadow "com.google.protobuf:protobuf-java:3.4.0"
-    shadow "com.google.protobuf:protobuf-java-util:3.4.0"
+    shadow "com.google.protobuf:protobuf-java:3.9.2"
+    shadow "com.google.protobuf:protobuf-java-util:3.9.2"
 
     compileWindows "com.android.tools.build:aapt2:3.5.0-alpha03-5252756:windows"
     compileMacOs "com.android.tools.build:aapt2:3.5.0-alpha03-5252756:osx"
@@ -56,8 +56,8 @@ dependencies {
     testCompile "com.google.truth.extensions:truth-java8-extension:0.45"
     testCompile "com.google.truth.extensions:truth-proto-extension:0.45"
     testCompile "com.google.jimfs:jimfs:1.1"
-    testCompile "com.google.protobuf:protobuf-java:3.4.0"
-    testCompile "com.google.protobuf:protobuf-java-util:3.4.0"
+    testCompile "com.google.protobuf:protobuf-java:3.9.2"
+    testCompile "com.google.protobuf:protobuf-java-util:3.9.2"
     testCompile "org.mockito:mockito-core:2.18.3"
     testCompile "junit:junit:4.12"
     testCompile "org.junit.jupiter:junit-jupiter-api:5.2.0"