diff --git a/build.gradle b/build.gradle
index e50cae9..0913d89 100644
--- a/build.gradle
+++ b/build.gradle
@@ -32,7 +32,7 @@ dependencies {
   testImplementation "junit:junit:4.13.2"
   testImplementation "com.squareup.okhttp3:mockwebserver:4.12.0"
   testImplementation "com.google.truth:truth:1.4.2"
-  testImplementation "org.jetbrains.kotlinx:kotlinx-serialization-protobuf:1.5.1"
+  testImplementation "org.jetbrains.kotlinx:kotlinx-serialization-protobuf:1.6.3"
   testImplementation "org.jetbrains.kotlinx:kotlinx-serialization-json:1.6.3"
 }