diff --git a/app/build.gradle b/app/build.gradle
index 8cab59122..08e0929fb 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -90,7 +90,7 @@ play {
 // per protobuf-gradle-plugin docs, this is recommended for android
 protobuf {
     protoc {
-        artifact = 'com.google.protobuf:protoc:3.13.0'
+        artifact = 'com.google.protobuf:protoc:3.15.3'
     }
     generateProtoTasks {
         all().each { task ->
@@ -145,7 +145,7 @@ dependencies {
     implementation "org.jetbrains.kotlinx:kotlinx-coroutines-android:$coroutines_version"
 
     // For now I'm not using javalite, because I want JSON printing
-    implementation ('com.google.protobuf:protobuf-java:3.14.0')
+    implementation ('com.google.protobuf:protobuf-java:3.15.3')
 
     // For UART access
     // implementation 'com.google.android.things:androidthings:1.0'
@@ -158,7 +158,7 @@ dependencies {
     implementation 'com.squareup.okhttp3:okhttp:4.9.0'
 
     // location services
-    implementation 'com.google.android.gms:play-services-location:17.1.0'
+    implementation 'com.google.android.gms:play-services-location:18.0.0'
 
     // For Google Sign-In (owner name accesss)
     implementation 'com.google.android.gms:play-services-auth:19.0.0'
diff --git a/build.gradle b/build.gradle
index cfef6d972..2f1a66ec5 100644
--- a/build.gradle
+++ b/build.gradle
@@ -1,7 +1,7 @@
 // Top-level build file where you can add configuration options common to all sub-projects/modules.
 
 buildscript {
-    ext.kotlin_version = '1.4.30'
+    ext.kotlin_version = '1.4.31'
     ext.coroutines_version = "1.3.9"
 
     repositories {
@@ -20,11 +20,11 @@ buildscript {
         // Add the Crashlytics Gradle plugin.
         // Check that you have the Google Services Gradle plugin v4.3.2 or later
         // (if not, add it).
-        classpath 'com.google.gms:google-services:4.3.4'
-        classpath 'com.google.firebase:firebase-crashlytics-gradle:2.4.1'
+        classpath 'com.google.gms:google-services:4.3.5'
+        classpath 'com.google.firebase:firebase-crashlytics-gradle:2.5.0'
 
         // protobuf plugin - docs here https://github.com/google/protobuf-gradle-plugin
-        classpath 'com.google.protobuf:protobuf-gradle-plugin:0.8.14'
+        classpath 'com.google.protobuf:protobuf-gradle-plugin:0.8.15'
 
         //classpath "app.brant:amazonappstorepublisher:0.1.0"
         classpath 'com.github.triplet.gradle:play-publisher:2.8.0'
diff --git a/geeksville-androidlib b/geeksville-androidlib
index cd0d0ab68..9b15752bb 160000
--- a/geeksville-androidlib
+++ b/geeksville-androidlib
@@ -1 +1 @@
-Subproject commit cd0d0ab688af967af7e609f6f10fdf2dde1249bc
+Subproject commit 9b15752bb0ce1fa383a9f4b65e204d4dd0afb03b