diff --git a/build.gradle b/build.gradle
index 62387ef529..04858bb9aa 100644
--- a/build.gradle
+++ b/build.gradle
@@ -29,7 +29,7 @@ subprojects {
         google()
         mavenCentral()
         maven {
-            url "https://jitpack.io"
+            url = "https://jitpack.io"
             content {
                 includeGroup "com.github.bitfireAT"
             }
diff --git a/gradle/verification-keyring.keys b/gradle/verification-keyring.keys
index 78aa60b56b..0afa0248cc 100644
--- a/gradle/verification-keyring.keys
+++ b/gradle/verification-keyring.keys
@@ -5347,6 +5347,22 @@ ymOZIduHXX1X+KzlRZTXvv4tSFnIQ0mWY1ySiOJQJS2WABVwFpFc8rECm6eN
 =z4dc
 -----END PGP PUBLIC KEY BLOCK-----
 
+pub    793FD5751A0F0780
+uid    Block Open Source Releases <oss-releases@block.xyz>
+
+sub    59EF9FBBED4216F5
+-----BEGIN PGP PUBLIC KEY BLOCK-----
+
+mDMEZzuZjRYJKwYBBAHaRw8BAQdA/FAoxAeXKY80R8UZ35NNr06SMFqC3Pv/LtP2
+sZS+7N60M0Jsb2NrIE9wZW4gU291cmNlIFJlbGVhc2VzIDxvc3MtcmVsZWFzZXNA
+YmxvY2sueHl6Prg4BGc7mY0SCisGAQQBl1UBBQEBB0BxT6NyXTVMCaIjZGa2M+/h
+z+xbicRNpHTpudCgcUvccwMBCAeIfgQYFgoAJhYhBB0hf4R17unxmrjda3k/1XUa
+DweABQJnO5mNAhsMBQkSzAMAAAoJEHk/1XUaDweAmCgA/2x1ZfeK2BbKUoPDvSHk
+bdks1K3OorITH/c1RHMJZe1TAP92RwDPmqy7YsZDKctpFeA0jhlWBNvbNTNkzRNu
+yEjMCg==
+=Eg1b
+-----END PGP PUBLIC KEY BLOCK-----
+
 pub    79752DB6C966F0B8
 uid    Rob Manning <robert.m.manning@gmail.com>
 
diff --git a/gradle/verification-metadata.xml b/gradle/verification-metadata.xml
index dbd59c6cc5..38eb0c6030 100644
--- a/gradle/verification-metadata.xml
+++ b/gradle/verification-metadata.xml
@@ -12,7 +12,6 @@
       </trusted-artifacts>
       <ignored-keys>
          <ignored-key id="2C7F998F4272C851" reason="Key couldn't be downloaded from any key server"/>
-         <ignored-key id="793FD5751A0F0780" reason="Key couldn't be downloaded from any key server"/>
       </ignored-keys>
       <trusted-keys>
          <trusted-key id="015479E1055341431B4545AB72475FD306B9CAB7" group="com.googlecode.javaewah" name="JavaEWAH" version="1.2.3"/>
@@ -49,6 +48,7 @@
          <trusted-key id="190D5A957FF22273E601F7A7C92C5FEC70161C62" group="org.apache" name="apache"/>
          <trusted-key id="19BEAB2D799C020F17C69126B16698A4ADF4D638" group="org.checkerframework"/>
          <trusted-key id="1A55F091AD28C07F831FA44D7905DE25C78AD456" group="com.google.protobuf"/>
+         <trusted-key id="1D217F8475EEE9F19AB8DD6B793FD5751A0F0780" group="^com[.]squareup($|([.].*))" regex="true"/>
          <trusted-key id="1D2C7EF8ADA0F794B58C7C63436902AF59EDF60E">
             <trusting group="dev.equo.ide" name="solstice" version="1.7.5"/>
             <trusting group="dev.equo.ide" name="solstice" version="1.8.0"/>
@@ -945,6 +945,14 @@
             <sha256 value="6eea2bc150828c8fcba777e93037038e2ee3ec441c43d6acecf2c5cd9ddc5374" origin="Generated by Gradle" reason="Artifact is not signed"/>
          </artifact>
       </component>
+      <component group="androidx.startup" name="startup-runtime" version="1.2.0">
+         <artifact name="startup-runtime-1.2.0.aar">
+            <sha256 value="f51d361d17b30b09cfb9e2aebf301d113f99437cbf462a066092795fb60eddd2" origin="Generated by Gradle"/>
+         </artifact>
+         <artifact name="startup-runtime-1.2.0.module">
+            <sha256 value="39387ad16429950ac100a055bc7cc809b0ecef86da29c5b41f2fb0d2ff063c1c" origin="Generated by Gradle"/>
+         </artifact>
+      </component>
       <component group="androidx.test" name="annotation" version="1.0.1">
          <artifact name="annotation-1.0.1.aar">
             <sha256 value="c0754928effe1968c3a9a7b55d1dfc7ceb1e1e7c9f3f09f98afd42431f712492" origin="Generated by Gradle" reason="Artifact is not signed"/>
@@ -12103,6 +12111,11 @@
             <sha256 value="fe0cd9e32193e453333fd2b1f577e662fb5abc6907102bb967817bc131280fd7" origin="Generated by Gradle"/>
          </artifact>
       </component>
+      <component group="org.jetbrains.kotlin" name="kotlin-stdlib" version="1.8.22">
+         <artifact name="kotlin-stdlib-1.8.22.pom">
+            <sha256 value="596f4a62f3086ad98f0e78b3e257ba5b247cd313bffa9818e509696210e83a37" origin="Generated by Gradle"/>
+         </artifact>
+      </component>
       <component group="org.jetbrains.kotlin" name="kotlin-stdlib" version="1.9.0">
          <artifact name="kotlin-stdlib-1.9.0.jar">
             <sha256 value="35aeffbe2db5aa446072cee50fcee48b7fa9e2fc51ca37c0cc7d7d0bc39d952e" origin="Generated by Gradle"/>
diff --git a/gradle/wrapper/gradle-wrapper.jar b/gradle/wrapper/gradle-wrapper.jar
index 1b33c55baa..8bdaf60c75 100644
Binary files a/gradle/wrapper/gradle-wrapper.jar and b/gradle/wrapper/gradle-wrapper.jar differ
diff --git a/gradle/wrapper/gradle-wrapper.properties b/gradle/wrapper/gradle-wrapper.properties
index 7705927e94..48b43d3506 100644
--- a/gradle/wrapper/gradle-wrapper.properties
+++ b/gradle/wrapper/gradle-wrapper.properties
@@ -1,6 +1,6 @@
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-8.14.3-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-9.0.0-all.zip
 networkTimeout=10000
 validateDistributionUrl=true
 zipStoreBase=GRADLE_USER_HOME
diff --git a/gradlew b/gradlew
index 23d15a9367..ef07e0162b 100755
--- a/gradlew
+++ b/gradlew
@@ -1,7 +1,7 @@
 #!/bin/sh
 
 #
-# Copyright © 2015-2021 the original authors.
+# Copyright © 2015 the original authors.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
diff --git a/library/build.gradle b/library/build.gradle
index d2c575fabf..c5a8667d51 100644
--- a/library/build.gradle
+++ b/library/build.gradle
@@ -121,20 +121,20 @@ tasks.withType(SpotBugsTask){task ->
 }
 
 android {
-    compileSdk 35
+    compileSdk = 35
 
     buildTypes {
         debug {
-            testCoverageEnabled true
+            testCoverageEnabled = true
         }
     }
 
     lint {
-        abortOnError true
+        abortOnError = true
         disable 'MissingTranslation', 'GradleDependency', 'VectorPath', 'IconMissingDensityFolder', 'IconDensities', 'GoogleAppIndexingWarning', 'MissingDefaultResource', 'StringFormatInvalid', 'MissingQuantity', 'InvalidPackage'
-        htmlOutput file("$project.buildDir/reports/lint/lint.html")
-        htmlReport true
-        warningsAsErrors true
+        htmlOutput = file("$project.buildDir/reports/lint/lint.html")
+        htmlReport = true
+        warningsAsErrors = true
     }
 
     defaultConfig {
@@ -149,7 +149,7 @@ android {
         testInstrumentationRunnerArgument "TEST_SERVER_PASSWORD2", "${NC_TEST_SERVER_PASSWORD2}"
         testInstrumentationRunnerArguments disableAnalytics: 'true'
 
-        multiDexEnabled true
+        multiDexEnabled = true
     }
 
     compileOptions {
@@ -172,7 +172,7 @@ android {
         }
     }
 
-    namespace 'com.owncloud.android.lib'
+    namespace = 'com.owncloud.android.lib'
 }
 
 tasks.register("combinedTestReport", JacocoReport) {
diff --git a/sample_client/build.gradle b/sample_client/build.gradle
index 41a1c50162..3625fcbc79 100644
--- a/sample_client/build.gradle
+++ b/sample_client/build.gradle
@@ -27,10 +27,10 @@ repositories {
 }
 
 android {
-    compileSdk 35
+    compileSdk = 35
 
     lintOptions {
-        abortOnError false
+        abortOnError = false
     }
 
     packagingOptions {
@@ -44,11 +44,11 @@ android {
         minSdkVersion 21
         targetSdkVersion 35
 
-        multiDexEnabled true
+        multiDexEnabled = true
 
         testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
     }
-    namespace 'com.owncloud.android.lib.sampleclient'
+    namespace = 'com.owncloud.android.lib.sampleclient'
 }
 
 dependencies {
diff --git a/sample_client/gradle/wrapper/gradle-wrapper.properties b/sample_client/gradle/wrapper/gradle-wrapper.properties
index 89ba202fe8..022370c3ff 100644
--- a/sample_client/gradle/wrapper/gradle-wrapper.properties
+++ b/sample_client/gradle/wrapper/gradle-wrapper.properties
@@ -5,4 +5,4 @@ distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-8.14.3-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-9.0.0-all.zip