diff --git a/brouter-routing-app/build.gradle b/brouter-routing-app/build.gradle
index e19e45c..0527879 100644
--- a/brouter-routing-app/build.gradle
+++ b/brouter-routing-app/build.gradle
@@ -8,7 +8,7 @@ plugins {
 }
 
 android {
-    compileSdk 35
+    compileSdk 36
 
     base {
         archivesName = "BRouterApp."  + project.version
@@ -100,9 +100,9 @@ repositories {
 }
 
 dependencies {
-    implementation 'androidx.appcompat:appcompat:1.7.0'
+    implementation 'androidx.appcompat:appcompat:1.7.1'
     implementation "androidx.constraintlayout:constraintlayout:2.2.1"
-    implementation 'androidx.work:work-runtime:2.10.1'
+    implementation 'androidx.work:work-runtime:2.10.2'
     implementation 'com.google.android.material:material:1.12.0'
 
     implementation project(':brouter-mapaccess')
@@ -115,7 +115,7 @@ dependencies {
 
     androidTestImplementation 'androidx.test.ext:junit:1.2.1'
     androidTestImplementation 'androidx.test.espresso:espresso-core:3.6.1'
-    androidTestImplementation 'androidx.work:work-testing:2.10.1'
+    androidTestImplementation 'androidx.work:work-testing:2.10.2'
 }
 
 gradle.projectsEvaluated {
diff --git a/brouter-util/src/main/java/btools/util/StackSampler.java b/brouter-util/src/main/java/btools/util/StackSampler.java
index 753fec4..53c5db6 100644
--- a/brouter-util/src/main/java/btools/util/StackSampler.java
+++ b/brouter-util/src/main/java/btools/util/StackSampler.java
@@ -12,7 +12,7 @@ import java.util.Map;
 import java.util.Random;
 
 public class StackSampler extends Thread {
-  private DateFormat df = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss,SSS", new Locale("en", "US"));
+  private DateFormat df = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss,SSS", new Locale.Builder().setLanguage("en").setRegion("US").build());
   private BufferedWriter bw;
   private Random rand = new Random();