diff --git a/app/build.gradle b/app/build.gradle
index 180f88b9..c368247a 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -55,6 +55,11 @@ dependencies {
     // (and also the according lines in the settings.gradle):
     // implementation project(':dfu')
 
+    // Gson is needed for DFU to work. The DFU library dependency to Gson is internal and would
+    // not be attached to APK.
+    // See: https://github.com/NordicSemiconductor/Android-nRF-Toolbox/issues/86
+    implementation 'com.google.code.gson:gson:2.8.6'
+
     // Import the BLE Common Library.
     // The BLE Common Library depends on BLE Library. It is enough to include the first one.
     implementation 'no.nordicsemi.android:ble-common:2.2.0-alpha06'