diff --git a/app/build.gradle b/app/build.gradle
index 567ebda5..ecffad42 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -50,7 +50,7 @@ dependencies {
     implementation 'no.nordicsemi.android.support.v18:scanner:1.4.3'
 
     // The DFU Library is imported automatically from jcenter:
-    implementation 'no.nordicsemi.android:dfu:1.9.1'
+    implementation 'no.nordicsemi.android:dfu:1.10.0'
     // if you desire to build the DFU Library, clone the
     // https://github.com/NordicSemiconductor/Android-DFU-Library project into DFULibrary folder,
     // add it as a module into the project structure and uncomment the following line
@@ -60,7 +60,6 @@ dependencies {
     // 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.
diff --git a/app/src/main/java/no/nordicsemi/android/nrftoolbox/dfu/DfuActivity.java b/app/src/main/java/no/nordicsemi/android/nrftoolbox/dfu/DfuActivity.java
index eaa01a34..f6d670d2 100644
--- a/app/src/main/java/no/nordicsemi/android/nrftoolbox/dfu/DfuActivity.java
+++ b/app/src/main/java/no/nordicsemi/android/nrftoolbox/dfu/DfuActivity.java
@@ -703,6 +703,7 @@ public class DfuActivity extends AppCompatActivity implements LoaderCallbacks<Cu
 				.setForceDfu(forceDfu)
 				.setPacketsReceiptNotificationsEnabled(enablePRNs)
 				.setPacketsReceiptNotificationsValue(numberOfPackets)
+				.setPrepareDataObjectDelay(400)
 				.setUnsafeExperimentalButtonlessServiceInSecureDfuEnabled(true);
 		if (fileType == DfuService.TYPE_AUTO) {
 			starter.setZip(fileStreamUri, filePath);
diff --git a/app/src/main/res/values/strings_dfu.xml b/app/src/main/res/values/strings_dfu.xml
index 7f713e91..af75f7b3 100644
--- a/app/src/main/res/values/strings_dfu.xml
+++ b/app/src/main/res/values/strings_dfu.xml
@@ -24,7 +24,7 @@
 	<string name="dfu_feature_title">DFU</string>
 	<string name="dfu_service_title">nRF Toolbox DFU Proxy</string>
 	<string name="dfu_settings_title">DFU Settings</string>
-	<string name="dfu_lib_version">DFU Library version 1.9.1</string>
+	<string name="dfu_lib_version">DFU Library version 1.10.0</string>
 
 	<string name="dfu_feature_title_long">DEVICE FIRMWARE UPDATE</string>
 	<dimen name="dfu_feature_title_long_margin">-186dp</dimen>