diff --git a/demos/compose/build.gradle b/demos/compose/build.gradle
index 59a7cb7393..dc20b7b459 100644
--- a/demos/compose/build.gradle
+++ b/demos/compose/build.gradle
@@ -32,7 +32,7 @@ android {
     defaultConfig {
         versionName project.ext.releaseVersion
         versionCode project.ext.releaseVersionCode
-        minSdkVersion 21
+        minSdkVersion project.ext.minSdkVersion
         targetSdkVersion project.ext.appTargetSdkVersion
     }
 
diff --git a/demos/composition/build.gradle b/demos/composition/build.gradle
index e26187cbd2..9b11ece9e3 100644
--- a/demos/composition/build.gradle
+++ b/demos/composition/build.gradle
@@ -29,7 +29,7 @@ android {
     defaultConfig {
         versionName project.ext.releaseVersion
         versionCode project.ext.releaseVersionCode
-        minSdkVersion 21
+        minSdkVersion project.ext.minSdkVersion
         targetSdkVersion project.ext.appTargetSdkVersion
         multiDexEnabled true
     }
diff --git a/demos/transformer/build.gradle b/demos/transformer/build.gradle
index 1d6f779cfd..63f27f3a78 100644
--- a/demos/transformer/build.gradle
+++ b/demos/transformer/build.gradle
@@ -29,7 +29,7 @@ android {
     defaultConfig {
         versionName project.ext.releaseVersion
         versionCode project.ext.releaseVersionCode
-        minSdkVersion 21
+        minSdkVersion project.ext.minSdkVersion
         targetSdkVersion project.ext.appTargetSdkVersion
         multiDexEnabled true
     }
diff --git a/libraries/datasource_okhttp/build.gradle b/libraries/datasource_okhttp/build.gradle
index f745599a40..97f6e0aa0e 100644
--- a/libraries/datasource_okhttp/build.gradle
+++ b/libraries/datasource_okhttp/build.gradle
@@ -16,7 +16,7 @@ apply from: "$gradle.ext.androidxMediaSettingsDir/common_library_config.gradle"
 android {
     namespace 'androidx.media3.datasource.okhttp'
 
-    defaultConfig.minSdkVersion 21
+    defaultConfig.minSdkVersion project.ext.minSdkVersion
 
     publishing {
         singleVariant('release') {
diff --git a/libraries/transformer/build.gradle b/libraries/transformer/build.gradle
index c8e3ac1a94..39bec76b94 100644
--- a/libraries/transformer/build.gradle
+++ b/libraries/transformer/build.gradle
@@ -16,7 +16,7 @@ android {
     namespace 'androidx.media3.transformer'
 
     defaultConfig {
-        minSdkVersion 21
+        minSdkVersion project.ext.minSdkVersion
         // The following argument makes the Android Test Orchestrator run its
         // "pm clear" command after each test invocation. This command ensures
         // that the app's state is completely cleared between tests.