diff --git a/.project b/.project
deleted file mode 100644
index 4b5c2951a9..0000000000
--- a/.project
+++ /dev/null
@@ -1,33 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<projectDescription>
-	<name>ownCloud Android Library</name>
-	<comment></comment>
-	<projects>
-	</projects>
-	<buildSpec>
-		<buildCommand>
-			<name>com.android.ide.eclipse.adt.ResourceManagerBuilder</name>
-			<arguments>
-			</arguments>
-		</buildCommand>
-		<buildCommand>
-			<name>com.android.ide.eclipse.adt.PreCompilerBuilder</name>
-			<arguments>
-			</arguments>
-		</buildCommand>
-		<buildCommand>
-			<name>org.eclipse.jdt.core.javabuilder</name>
-			<arguments>
-			</arguments>
-		</buildCommand>
-		<buildCommand>
-			<name>com.android.ide.eclipse.adt.ApkBuilder</name>
-			<arguments>
-			</arguments>
-		</buildCommand>
-	</buildSpec>
-	<natures>
-		<nature>com.android.ide.eclipse.adt.AndroidNature</nature>
-		<nature>org.eclipse.jdt.core.javanature</nature>
-	</natures>
-</projectDescription>
diff --git a/.travis.yml b/.travis.yml
index d0bca7a29b..6a8a27d331 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -7,7 +7,7 @@ branches:
   - master
 install:
 # Let's use the new command 'sdkmanager' to install Android SDK components
-- yes | sdkmanager --verbose "build-tools;26.0.2"
+- yes | sdkmanager --verbose "build-tools;26.0.3"
 - yes | sdkmanager --verbose "platform-tools"
 - yes | sdkmanager --verbose "tools"
 - yes | sdkmanager --verbose "platforms;android-26"
diff --git a/ant.properties b/ant.properties
deleted file mode 100644
index 0901c3b20d..0000000000
--- a/ant.properties
+++ /dev/null
@@ -1,8 +0,0 @@
-# This file contains custom properties used by the Ant build system.
-#
-# This file must be checked in Version Control Systems.
-#
-
-# Java version options
-java.source=1.7
-java.target=1.7
diff --git a/build.gradle b/build.gradle
index ad97f38dcb..233232276f 100644
--- a/build.gradle
+++ b/build.gradle
@@ -2,6 +2,7 @@ buildscript {
     repositories {
         google()
         jcenter()
+        google()
     }
     dependencies {
         classpath 'com.android.tools.build:gradle:3.2.1'
diff --git a/build.xml b/build.xml
deleted file mode 100644
index a87e590dbd..0000000000
--- a/build.xml
+++ /dev/null
@@ -1,92 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<project name="owncloud-android-library" default="help">
-
-    <!-- The local.properties file is created and updated by the 'android' tool.
-         It contains the path to the SDK. It should *NOT* be checked into
-         Version Control Systems. -->
-    <property file="local.properties" />
-
-    <!-- The ant.properties file can be created by you. It is only edited by the
-         'android' tool to add properties to it.
-         This is the place to change some Ant specific build properties.
-         Here are some properties you may want to change/update:
-
-         source.dir
-             The name of the source directory. Default is 'src'.
-         out.dir
-             The name of the output directory. Default is 'bin'.
-
-         For other overridable properties, look at the beginning of the rules
-         files in the SDK, at tools/ant/build.xml
-
-         Properties related to the SDK location or the project target should
-         be updated using the 'android' tool with the 'update' action.
-
-         This file is an integral part of the build system for your
-         application and should be checked into Version Control Systems.
-
-         -->
-    <property file="ant.properties" />
-
-    <!-- if sdk.dir was not set from one of the property file, then
-         get it from the ANDROID_HOME env var.
-         This must be done before we load project.properties since
-         the proguard config can use sdk.dir -->
-    <property environment="env" />
-    <condition property="sdk.dir" value="${env.ANDROID_HOME}">
-        <isset property="env.ANDROID_HOME" />
-    </condition>
-
-    <!-- The project.properties file is created and updated by the 'android'
-         tool, as well as ADT.
-
-         This contains project specific properties such as project target, and library
-         dependencies. Lower level build properties are stored in ant.properties
-         (or in .classpath for Eclipse projects).
-
-         This file is an integral part of the build system for your
-         application and should be checked into Version Control Systems. -->
-    <loadproperties srcFile="project.properties" />
-
-    <!-- quick check on sdk.dir -->
-    <fail
-            message="sdk.dir is missing. Make sure to generate local.properties using 'android update project' or to inject it through the ANDROID_HOME environment variable."
-            unless="sdk.dir"
-    />
-
-    <!--
-        Import per project custom build rules if present at the root of the project.
-        This is the place to put custom intermediary targets such as:
-            -pre-build
-            -pre-compile
-            -post-compile (This is typically used for code obfuscation.
-                           Compiled code location: ${out.classes.absolute.dir}
-                           If this is not done in place, override ${out.dex.input.absolute.dir})
-            -post-package
-            -post-build
-            -pre-clean
-    -->
-    <import file="custom_rules.xml" optional="true" />
-
-    <!-- Import the actual build file.
-
-         To customize existing targets, there are two options:
-         - Customize only one target:
-             - copy/paste the target into this file, *before* the
-               <import> task.
-             - customize it to your needs.
-         - Customize the whole content of build.xml
-             - copy/paste the content of the rules files (minus the top node)
-               into this file, replacing the <import> task.
-             - customize to your needs.
-
-         ***********************
-         ****** IMPORTANT ******
-         ***********************
-         In all cases you must update the value of version-tag below to read 'custom' instead of an integer,
-         in order to avoid having your file be overridden by tools such as "android update project"
-    -->
-    <!-- version-tag: 1 -->
-    <import file="${sdk.dir}/tools/ant/build.xml" />
-
-</project>
diff --git a/custom_rules.xml b/custom_rules.xml
deleted file mode 100644
index 64ac6702a3..0000000000
--- a/custom_rules.xml
+++ /dev/null
@@ -1,7 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<project name="custom_rules">
-    <target name="-post-compile">
-        <echo>Copying jar file for binary distribution</echo>
-        <copy file="${out.absolute.dir}/classes.jar" toFile="${out.absolute.dir}/${ant.project.name}.jar" />
-    </target>
-</project>
\ No newline at end of file