diff --git a/platforms.json b/platforms.json
index 0983ab4..8ac7d9e 100644
--- a/platforms.json
+++ b/platforms.json
@@ -140,7 +140,8 @@
       "docker_dir": "android",
       "docker_image": "android",
       "docker_build_options": {
-        "QT_DOWNLOAD_SERVER": "172.17.0.1"
+        "QT_DOWNLOAD_SERVER": "172.17.0.1",
+		"NDK_PLATFORM": "21"
       },
       "cmake_toolchain": "/usr/lib/android-sdk/ndk-bundle/build/cmake/android.toolchain.cmake"
     }