diff --git a/README.md b/README.md
index 2f39814..9224638 100644
--- a/README.md
+++ b/README.md
@@ -120,8 +120,7 @@ endorsed by the Matrix.org Foundation C.I.C.
 
 First: bump version numbers in ``common.mk``, ``CMakeLists.txt``,
 ``javascript/package.json``, ``python/olm/__version__.py``, ``OLMKit.podspec``, ``Package.swift``,
-and ``android/olm-sdk/build.gradle`` (``versionCode``, ``versionName`` and
-``version``).
+and ``android/olm-sdk/java/org/matrix/olm/OlmManager.java`` in function ``getVersion()```.
 
 Also, ensure the changelog is up to date, and that everything is committed to
 git.
diff --git a/android/README.rst b/android/README.rst
index 46beaab..c52a2ca 100644
--- a/android/README.rst
+++ b/android/README.rst
@@ -24,6 +24,6 @@ Development
 -----------
 import the project from the ``android/`` path.
 
-The project contains some JNI files and some Java wraper files.
+The project contains some JNI files and some Java wrapper files.
 
 The project contains some tests under AndroidTests package.
diff --git a/android/build.gradle b/android/build.gradle
index ad6a928..da25888 100644
--- a/android/build.gradle
+++ b/android/build.gradle
@@ -2,11 +2,11 @@
 
 buildscript {
     repositories {
-        jcenter()
+        mavenCentral()
         google()
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:3.1.3'
+        classpath 'com.android.tools.build:gradle:4.1.3'
 
         // NOTE: Do not place your application dependencies here; they belong
         // in the individual module build.gradle files
@@ -15,7 +15,7 @@ buildscript {
 
 allprojects {
     repositories {
-        jcenter()
+        mavenCentral()
         google()
     }
 }
diff --git a/android/gradle/wrapper/gradle-wrapper.properties b/android/gradle/wrapper/gradle-wrapper.properties
index 87043e3..cef25cd 100644
--- a/android/gradle/wrapper/gradle-wrapper.properties
+++ b/android/gradle/wrapper/gradle-wrapper.properties
@@ -1,6 +1,7 @@
 #Thu Oct 13 09:38:01 CEST 2016
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-7.0-all.zip
+distributionSha256Sum=81003f83b0056d20eedf48cddd4f52a9813163d4ba185bcf8abd34b8eeea4cbd
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-4.7-all.zip
diff --git a/android/olm-sdk/build.gradle b/android/olm-sdk/build.gradle
index f0e7a03..294e00e 100644
--- a/android/olm-sdk/build.gradle
+++ b/android/olm-sdk/build.gradle
@@ -3,14 +3,11 @@ import org.apache.tools.ant.taskdefs.condition.Os
 apply plugin: 'com.android.library'
 
 android {
-    compileSdkVersion 28
+    compileSdkVersion 30
 
     defaultConfig {
         minSdkVersion 11
-        targetSdkVersion 28
-        versionCode 322
-        versionName "3.2.2"
-        version "3.2.2"
+        targetSdkVersion 30
         testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
     }
     buildTypes {
@@ -34,7 +31,7 @@ android {
         jni.srcDirs = []
     }
 
-   task buildJavaDoc(type: Javadoc) {
+    task buildJavaDoc(type: Javadoc) {
         source = android.sourceSets.main.java.srcDirs
         classpath += project.files(android.getBootClasspath().join(File.pathSeparator))
         destinationDir = file("./doc/")
@@ -60,14 +57,15 @@ android {
     }
 
     tasks.withType(JavaCompile) {
-        compileTask -> if (compileTask.name.startsWith('compileDebugJava')) {
-            println 'test compile: Debug'
-            compileTask.dependsOn ndkBuildNativeDebug
-        } else if (compileTask.name.startsWith('compileReleaseJava')) {
-            println 'test compile: Release'
-            compileTask.dependsOn ndkBuildNativeRelease
-        }
-        compileTask.dependsOn buildJavaDoc
+        compileTask ->
+            if (compileTask.name.startsWith('compileDebugJava')) {
+                println 'test compile: Debug'
+                compileTask.dependsOn ndkBuildNativeDebug
+            } else if (compileTask.name.startsWith('compileReleaseJava')) {
+                println 'test compile: Release'
+                compileTask.dependsOn ndkBuildNativeRelease
+            }
+            compileTask.dependsOn buildJavaDoc
     }
 
     clean.dependsOn cleanNative
@@ -117,9 +115,9 @@ def gitRevisionDate() {
 }
 
 dependencies {
-    testImplementation 'junit:junit:4.12'
-    androidTestImplementation 'junit:junit:4.12'
-    androidTestImplementation 'com.android.support:support-annotations:28.0.0'
-    androidTestImplementation 'com.android.support.test:runner:1.0.2'
-    androidTestImplementation 'com.android.support.test:rules:1.0.2'
+    testImplementation 'junit:junit:4.13.2'
+    androidTestImplementation 'junit:junit:4.13.2'
+
+    androidTestImplementation 'androidx.test:runner:1.3.0'
+    androidTestImplementation 'androidx.test:rules:1.3.0'
 }
diff --git a/android/olm-sdk/src/main/AndroidManifest.xml b/android/olm-sdk/src/main/AndroidManifest.xml
index 902f2e3..e8a38cc 100644
--- a/android/olm-sdk/src/main/AndroidManifest.xml
+++ b/android/olm-sdk/src/main/AndroidManifest.xml
@@ -1,8 +1 @@
-<manifest xmlns:android="http://schemas.android.com/apk/res/android"
-    package="org.matrix.olm">
-
-    <application
-        android:allowBackup="true"
-        android:label="@string/app_name">
-    </application>
-</manifest>
+<manifest package="org.matrix.olm" />
diff --git a/android/olm-sdk/src/main/java/org/matrix/olm/OlmManager.java b/android/olm-sdk/src/main/java/org/matrix/olm/OlmManager.java
index cd33a5a..c89edda 100644
--- a/android/olm-sdk/src/main/java/org/matrix/olm/OlmManager.java
+++ b/android/olm-sdk/src/main/java/org/matrix/olm/OlmManager.java
@@ -46,7 +46,7 @@ public class OlmManager {
      * @return the library version
      */
     public String getVersion() {
-        return BuildConfig.VERSION_NAME;
+        return "3.2.2";
     }
 
     /**
diff --git a/android/olm-sdk/src/main/res/values/strings.xml b/android/olm-sdk/src/main/res/values/strings.xml
deleted file mode 100644
index 93bea1d..0000000
--- a/android/olm-sdk/src/main/res/values/strings.xml
+++ /dev/null
@@ -1,3 +0,0 @@
-<resources>
-    <string name="app_name">OlmSdk</string>
-</resources>