diff --git a/.env.app b/.env.app
index 4e2b3e306..0cb423ddd 100644
--- a/.env.app
+++ b/.env.app
@@ -1,7 +1,7 @@
 VITE_APP_VERSION = $npm_package_version
 VITE_APP_API_URL = https://neu.aula.de
 VITE_APP_MULTI = true
-VITE_APP_IS_SSO_ENABLED = false
+VITE_APP_IS_SSO_ENABLED = true
 VITE_APP_BASENAME = /
 
 # vim: set ft=sh:
diff --git a/android/.idea/compiler.xml b/android/.idea/compiler.xml
index b86273d94..e5114f95b 100644
--- a/android/.idea/compiler.xml
+++ b/android/.idea/compiler.xml
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project version="4">
   <component name="CompilerConfiguration">
-    <bytecodeTargetLevel target="21" />
+    <bytecodeTargetLevel target="26" />
   </component>
 </project>
\ No newline at end of file
diff --git a/android/.idea/misc.xml b/android/.idea/misc.xml
index f7608edae..05156b26e 100644
--- a/android/.idea/misc.xml
+++ b/android/.idea/misc.xml
@@ -1,4 +1,5 @@
+<?xml version="1.0" encoding="UTF-8"?>
 <project version="4">
   <component name="ExternalStorageConfigurationManager" enabled="true" />
-  <component name="ProjectRootManager" version="2" languageLevel="JDK_21" default="true" project-jdk-name="jbr-21" project-jdk-type="JavaSDK" />
+  <component name="ProjectRootManager" version="2" languageLevel="JDK_26" default="true" project-jdk-name="26" project-jdk-type="JavaSDK" />
 </project>
\ No newline at end of file
diff --git a/android/app/build.gradle b/android/app/build.gradle
index 40a787bba..342b63f65 100644
--- a/android/app/build.gradle
+++ b/android/app/build.gradle
@@ -19,7 +19,7 @@ android {
     buildTypes {
         release {
             minifyEnabled false
-            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
+            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
         }
     }
 }
diff --git a/android/build.gradle b/android/build.gradle
index 4e7cdc7c4..703bc96dd 100644
--- a/android/build.gradle
+++ b/android/build.gradle
@@ -7,8 +7,8 @@ buildscript {
         mavenCentral()
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:8.9.2'
-        classpath 'com.google.gms:google-services:4.4.2'
+        classpath 'com.android.tools.build:gradle:9.3.2'
+        classpath 'com.google.gms:google-services:4.5.0'
 
         // NOTE: Do not place your application dependencies here; they belong
         // in the individual module build.gradle files
diff --git a/android/gradle/wrapper/gradle-wrapper.properties b/android/gradle/wrapper/gradle-wrapper.properties
index c1d5e0185..d24973462 100644
--- a/android/gradle/wrapper/gradle-wrapper.properties
+++ b/android/gradle/wrapper/gradle-wrapper.properties
@@ -1,6 +1,7 @@
+#Mon Aug 31 12:35:37 CEST 2026
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-8.11.1-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-9.7.0-all.zip
 networkTimeout=10000
 validateDistributionUrl=true
 zipStoreBase=GRADLE_USER_HOME