diff --git a/core/build.gradle b/core/build.gradle
index 1a42486..33c118f 100644
--- a/core/build.gradle
+++ b/core/build.gradle
@@ -18,7 +18,7 @@ dependencies {
     api 'com.madgag.spongycastle:core:1.58.0.0'
     api 'com.lambdaworks:scrypt:1.4.0'
     api 'org.junit.jupiter:junit-jupiter-api:5.10.3'
-    api 'com.google.protobuf:protobuf-java:3.25.3'
+    api 'com.google.protobuf:protobuf-java:4.27.2'
     api 'org.slf4j:slf4j-jdk14:2.0.13'
     api 'org.json:json:20240303'
     api 'com.squareup.okhttp:okhttp:2.7.5'
diff --git a/wallet/build.gradle b/wallet/build.gradle
index d228e1d..72d00f4 100644
--- a/wallet/build.gradle
+++ b/wallet/build.gradle
@@ -57,7 +57,7 @@ android {
         implementation 'com.google.guava:guava:23.0' //TODO ToStringHelper update for 19.0+
         implementation 'com.google.code.findbugs:jsr305:3.0.2' // most recent as of 7/2023
         implementation 'com.madgag.spongycastle:core:1.58.0.0' // most recent as of 7/2023
-        implementation 'com.google.protobuf:protobuf-java:3.25.3' // most used as of 7/23/2024
+        implementation 'com.google.protobuf:protobuf-java:4.27.2' // most used as of 7/23/2024
         implementation 'com.google.zxing:core:3.5.3' //most recent as of 7/23/2024
         implementation 'ch.acra:acra:4.11.1' //most recent as of 10/2023
         implementation 'com.android.support:support-v4-preferencefragment:1.0.0@aar'