diff --git a/cryptography_flutter/android/build.gradle b/cryptography_flutter/android/build.gradle
index 6b37889..65549e8 100644
--- a/cryptography_flutter/android/build.gradle
+++ b/cryptography_flutter/android/build.gradle
@@ -25,6 +25,10 @@ apply plugin: 'com.android.library'
 apply plugin: 'kotlin-android'
 
 android {
+    if (project.android.hasProperty("namespace")) {
+        namespace "dev.dint.cryptography_flutter"
+    }
+
     compileSdkVersion 31
 
     compileOptions {