diff --git a/app/build.gradle b/app/build.gradle
index d6d8dce25..95db36190 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -274,16 +274,16 @@ dependencies {
 
     // Jetpack AndroidX libraries
     implementation "androidx.palette:palette-ktx:1.0.0"
-    implementation "androidx.annotation:annotation:1.6.0"
+    implementation "androidx.annotation:annotation:1.7.1"
     implementation "androidx.vectordrawable:vectordrawable-animated:1.1.0"
     implementation "androidx.appcompat:appcompat:1.6.1"
-    implementation "androidx.recyclerview:recyclerview:1.3.0"
-    implementation "androidx.core:core-ktx:1.10.1"
+    implementation "androidx.recyclerview:recyclerview:1.3.2"
+    implementation "androidx.core:core-ktx:1.12.0"
     implementation "androidx.constraintlayout:constraintlayout:2.1.4"
-    implementation "androidx.fragment:fragment-ktx:1.6.0"
+    implementation "androidx.fragment:fragment-ktx:1.6.2"
     implementation "androidx.drawerlayout:drawerlayout:1.2.0"
-    implementation 'androidx.preference:preference-ktx:1.2.0'
-    implementation 'androidx.webkit:webkit:1.7.0'
+    implementation 'androidx.preference:preference-ktx:1.2.1'
+    implementation 'androidx.webkit:webkit:1.10.0'
     implementation 'androidx.core:core-splashscreen:1.0.1'
     //def lifecycle_version = "2.4.0"
     //implementation "androidx.lifecycle:lifecycle-viewmodel:$lifecycle_version"
diff --git a/app/src/main/java/fulguris/activity/WebBrowserActivity.kt b/app/src/main/java/fulguris/activity/WebBrowserActivity.kt
index 6635a0465..b041d7c6d 100644
--- a/app/src/main/java/fulguris/activity/WebBrowserActivity.kt
+++ b/app/src/main/java/fulguris/activity/WebBrowserActivity.kt
@@ -897,7 +897,11 @@ abstract class WebBrowserActivity : ThemedBrowserActivity(),
         // Create a gesture detector to catch horizontal swipes our on toolbar
         val toolbarSwipeDetector = GestureDetectorCompat(this, object : GestureDetector.SimpleOnGestureListener() {
 
-            override fun onFling(event1: MotionEvent, event2: MotionEvent, velocityX: Float, velocityY: Float): Boolean {
+            override fun onFling(event1: MotionEvent?, event2: MotionEvent, velocityX: Float, velocityY: Float): Boolean {
+
+                if (event1==null) {
+                    return false
+                }
 
                 // No swipe action when our text field is focused
                 if (searchView.hasFocus()) {
@@ -1156,7 +1160,12 @@ abstract class WebBrowserActivity : ThemedBrowserActivity(),
 //                return true
 //            }
 
-            override fun onFling(event1: MotionEvent, event2: MotionEvent, velocityX: Float, velocityY: Float): Boolean {
+            override fun onFling(event1: MotionEvent?, event2: MotionEvent, velocityX: Float, velocityY: Float): Boolean {
+
+                if (event1==null) {
+                    return false
+                }
+
                 // No swipe when too long
                 if ((event2.eventTime - event1.eventTime) > kMaxSwipeTime) {
                     return false
diff --git a/app/src/main/java/fulguris/view/ImageView.kt b/app/src/main/java/fulguris/view/ImageView.kt
index 8c4cb01ee..1a2c87700 100644
--- a/app/src/main/java/fulguris/view/ImageView.kt
+++ b/app/src/main/java/fulguris/view/ImageView.kt
@@ -43,7 +43,7 @@ class ImageView : androidx.appcompat.widget.AppCompatImageView {
     constructor(context: Context): super(context) {
     }
 
-    override fun onDraw(canvas: Canvas?) {
+    override fun onDraw(canvas: Canvas) {
         try {
             super.onDraw(canvas)
         } catch (e: Exception) {
diff --git a/app/src/main/java/fulguris/view/WebPageTab.kt b/app/src/main/java/fulguris/view/WebPageTab.kt
index 1ba6b276f..d41d3ab33 100644
--- a/app/src/main/java/fulguris/view/WebPageTab.kt
+++ b/app/src/main/java/fulguris/view/WebPageTab.kt
@@ -388,7 +388,7 @@ class WebPageTab(
     /**
      *
      */
-    override fun onSharedPreferenceChanged(sharedPreferences: SharedPreferences, key: String) {
+    override fun onSharedPreferenceChanged(sharedPreferences: SharedPreferences, key: String?) {
         when (key) {
             activity.getString(R.string.pref_key_scrollbar_size) -> {
                 webView?.scrollBarSize = userPreferences.scrollbarSize.px.toInt()
@@ -1383,7 +1383,12 @@ class WebPageTab(
          */
         private var canTriggerLongPress = true
 
-        override fun onFling(e1: MotionEvent, e2: MotionEvent, velocityX: Float, velocityY: Float): Boolean {
+        override fun onFling(e1: MotionEvent?, e2: MotionEvent, velocityX: Float, velocityY: Float): Boolean {
+
+            if (e1==null) {
+                return false
+            }
+
             val power = (velocityY * 100 / maxFling).toInt()
             if (power < -10) {
                 webBrowser.hideActionBar()
diff --git a/build.gradle b/build.gradle
index 5e2acf6ce..f82b9c8fd 100644
--- a/build.gradle
+++ b/build.gradle
@@ -1,5 +1,5 @@
 buildscript {
-    ext.kotlinVersion = '1.8.20'
+    ext.kotlinVersion = '1.9.20'
     ext.daggerVersion = '2.46.1'
     repositories {
         google()
@@ -40,6 +40,6 @@ allprojects {
 
 ext {
     minSdkVersion = 21
-    targetSdkVersion = 33
+    targetSdkVersion = 34
     //buildToolsVersion = '33.0.0'
 }