diff --git a/Dockerfile b/Dockerfile
index a7a353d..f65401e 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -4,9 +4,9 @@ FROM gradle:7-jdk16
 ENV ANDROID_SDK_URL https://dl.google.com/android/repository/commandlinetools-linux-7583922_latest.zip
 ENV ANDROID_SDK_CHECKSUM 124f2d5115eee365df6cf3228ffbca6fc3911d16f8025bebd5b1c6e2fcfa7faf
 # https://developer.android.com/studio/releases/platform-tools
-ENV ANDROID_BUILD_TOOLS_VERSION 30.0.2
+ENV ANDROID_BUILD_TOOLS_VERSION 31.0.3
 ENV ANDROID_HOME /usr/local/android-sdk-linux
-ENV ANDROID_VERSION 29
+ENV ANDROID_VERSION 31
 ENV PATH ${PATH}:${ANDROID_HOME}/tools:${ANDROID_HOME}/platform-tools
 
 RUN mkdir "$ANDROID_HOME" .android && \
diff --git a/app/build.gradle b/app/build.gradle
index 9de94c5..54b67ca 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -40,7 +40,7 @@ apply plugin: 'kotlin-kapt'
 
 android {
     compileSdkVersion 31
-    buildToolsVersion "30.0.2"
+    buildToolsVersion "31.0.3"
 
     defaultConfig {
         applicationId "net.schueller.peertube"