diff --git a/build.gradle b/build.gradle
index a2d6a92f..c61b945e 100644
--- a/build.gradle
+++ b/build.gradle
@@ -5,7 +5,7 @@ buildscript {
 		mavenCentral()
 	}
 	dependencies {
-		classpath "com.android.tools.build:gradle:7.0.4"
+		classpath "com.android.tools.build:gradle:7.1.3"
 		classpath "com.google.android.libraries.mapsplatform.secrets-gradle-plugin:secrets-gradle-plugin:2.0.1"
 		// NOTE: Do not place your application dependencies here; they belong
 		// in the individual module build.gradle files
diff --git a/mastodon/build.gradle b/mastodon/build.gradle
index 1dcf264c..f5456dc2 100644
--- a/mastodon/build.gradle
+++ b/mastodon/build.gradle
@@ -5,13 +5,12 @@ plugins {
 
 android {
 	compileSdk 31
-	buildToolsVersion "33.0.0-rc1"
 	defaultConfig {
 		applicationId "org.joinmastodon.android"
 		minSdk 23
 		targetSdk 31
-		versionCode 27
-		versionName "1.0"
+		versionCode 28
+		versionName "1.0.1"
 		testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
 	}
 
@@ -36,8 +35,8 @@ android {
 		}
 	}
 	compileOptions {
-		sourceCompatibility JavaVersion.VERSION_15
-		targetCompatibility JavaVersion.VERSION_15
+		sourceCompatibility JavaVersion.VERSION_17
+		targetCompatibility JavaVersion.VERSION_17
 		coreLibraryDesugaringEnabled true
 	}
 	sourceSets{