diff --git a/app/build.gradle b/app/build.gradle
index 54930f6c5..dc8f2f55e 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -15,7 +15,6 @@ def gitDescribe = { ->
 
 android {
     compileSdkVersion rootProject.ext.compileSdkVersion
-    buildToolsVersion rootProject.ext.buildToolsVersion
 
     defaultConfig {
         minSdkVersion 32 // leave at 32 for robolectric tests
diff --git a/build.gradle b/build.gradle
index 578cddfb1..96e9d4ffd 100644
--- a/build.gradle
+++ b/build.gradle
@@ -20,7 +20,6 @@ plugins {
 }
 
 ext {
-    buildToolsVersion = '33.0.0'
     compileSdkVersion = 33
     minSdkVersion = 32
     targetSdkVersion = 33
diff --git a/contactsbackup/build.gradle b/contactsbackup/build.gradle
index 8675a9475..3ee227925 100644
--- a/contactsbackup/build.gradle
+++ b/contactsbackup/build.gradle
@@ -10,7 +10,6 @@ plugins {
 
 android {
     compileSdkVersion rootProject.ext.compileSdkVersion
-    buildToolsVersion rootProject.ext.buildToolsVersion
 
     defaultConfig {
         applicationId "org.calyxos.backup.contacts"
diff --git a/storage/demo/build.gradle b/storage/demo/build.gradle
index ef3625b7c..9c983784d 100644
--- a/storage/demo/build.gradle
+++ b/storage/demo/build.gradle
@@ -12,7 +12,6 @@ plugins {
 
 android {
     compileSdkVersion rootProject.ext.compileSdkVersion
-    buildToolsVersion rootProject.ext.buildToolsVersion
 
     defaultConfig {
         applicationId "de.grobox.storagebackuptester"
diff --git a/storage/lib/build.gradle b/storage/lib/build.gradle
index 2b8db4d3d..d5b4ca88d 100644
--- a/storage/lib/build.gradle
+++ b/storage/lib/build.gradle
@@ -14,7 +14,6 @@ plugins {
 
 android {
     compileSdkVersion rootProject.ext.compileSdkVersion
-    buildToolsVersion rootProject.ext.buildToolsVersion
 
     defaultConfig {
         minSdkVersion rootProject.ext.minSdkVersion