diff --git a/app/build.gradle b/app/build.gradle
index bec03d10..b49a4e6f 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -23,6 +23,7 @@ android {
             }
         }
 
+        ndkVersion "21.0.6113669"
         ndk {
             // https://developer.android.com/ndk/guides/abis.html#sa
             abiFilters 'armeabi-v7a', 'arm64-v8a', 'x86', 'x86_64'