diff --git a/3rdparty/patched-zxing-build.gradle b/3rdparty/patched-zxing-build.gradle
index 3c6813fa..dcb5eddb 100644
--- a/3rdparty/patched-zxing-build.gradle
+++ b/3rdparty/patched-zxing-build.gradle
@@ -4,8 +4,7 @@ plugins {
 }
 
 android {
-    compileSdkVersion 33
-    buildToolsVersion "33.0.1"
+    compileSdkVersion 34
     // ndk version 25 is known to support c++20 (see #386)
     // ndkVersion '25.1.8937393'
 
diff --git a/app/build.gradle b/app/build.gradle
index b09bb931..5e90b673 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -96,8 +96,8 @@ android {
         }
     }
     compileOptions {
-        sourceCompatibility JavaVersion.VERSION_18
-        targetCompatibility JavaVersion.VERSION_18
+        sourceCompatibility JavaVersion.VERSION_17
+        targetCompatibility JavaVersion.VERSION_17
     }
     buildFeatures {
         viewBinding true
diff --git a/build.gradle b/build.gradle
index 09efee83..f9d07633 100644
--- a/build.gradle
+++ b/build.gradle
@@ -7,7 +7,7 @@ buildscript {
         mavenCentral()
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:8.6.1'
+        classpath 'com.android.tools.build:gradle:8.7.3'
         classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
 
         // NOTE: Do not place your application dependencies here; they belong
diff --git a/gradle/wrapper/gradle-wrapper.properties b/gradle/wrapper/gradle-wrapper.properties
index a1e25708..1e25cde5 100644
--- a/gradle/wrapper/gradle-wrapper.properties
+++ b/gradle/wrapper/gradle-wrapper.properties
@@ -1,6 +1,6 @@
 #Thu Dec 30 21:54:35 CET 2021
 distributionBase=GRADLE_USER_HOME
-distributionUrl=https\://services.gradle.org/distributions/gradle-8.7-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-8.9-bin.zip
 distributionPath=wrapper/dists
 zipStorePath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
diff --git a/tools/babybuddy-version-array/versions b/tools/babybuddy-version-array/versions
index b2813ac0..ed1545ac 100644
--- a/tools/babybuddy-version-array/versions
+++ b/tools/babybuddy-version-array/versions
@@ -1,3 +1,4 @@
+v2.7.0
 v2.6.0
 v2.5.0
 v2.3.0