diff --git a/demo/android/src/main/kotlin/im/molly/monero/demo/ui/SettingsViewModel.kt b/demo/android/src/main/kotlin/im/molly/monero/demo/ui/SettingsViewModel.kt
index 81c0d9d..19b2f83 100644
--- a/demo/android/src/main/kotlin/im/molly/monero/demo/ui/SettingsViewModel.kt
+++ b/demo/android/src/main/kotlin/im/molly/monero/demo/ui/SettingsViewModel.kt
@@ -82,11 +82,11 @@ class SettingsViewModel(
     }
 
     private suspend fun onProxyChanged(newProxy: Proxy) {
-        walletRepository.getRemoteClients().first().forEach {
-            val currentProxy = it.httpClient.proxy()
-            if (currentProxy != newProxy) {
-                val builder = it.httpClient.newBuilder()
-                it.httpClient = builder.proxy(newProxy).build()
+        walletRepository.getRemoteClients().first().forEach { client ->
+            val current = client.httpClient.proxy
+            if (current != newProxy) {
+                val builder = client.httpClient.newBuilder()
+                client.httpClient = builder.proxy(newProxy).build()
             }
         }
     }
diff --git a/lib/android/build.gradle b/lib/android/build.gradle
index cc51283..fb84c2a 100644
--- a/lib/android/build.gradle
+++ b/lib/android/build.gradle
@@ -90,7 +90,7 @@ android {
 }
 
 dependencies {
-    api 'com.squareup.okhttp3:okhttp:3.12.13'
+    api 'com.squareup.okhttp3:okhttp:4.10.0'
 
     implementation 'androidx.core:core-ktx:1.9.0'
 //    implementation 'androidx.appcompat:appcompat:1.3.0'
diff --git a/lib/android/src/main/kotlin/im/molly/monero/RemoteNodeClient.kt b/lib/android/src/main/kotlin/im/molly/monero/RemoteNodeClient.kt
index d7bb6af..3e99282 100644
--- a/lib/android/src/main/kotlin/im/molly/monero/RemoteNodeClient.kt
+++ b/lib/android/src/main/kotlin/im/molly/monero/RemoteNodeClient.kt
@@ -7,6 +7,8 @@ import im.molly.monero.loadbalancer.Rule
 import kotlinx.coroutines.*
 import kotlinx.coroutines.flow.Flow
 import okhttp3.*
+import okhttp3.MediaType.Companion.toMediaType
+import okhttp3.RequestBody.Companion.toRequestBody
 import java.io.FileOutputStream
 import java.io.IOException
 import java.util.concurrent.ConcurrentHashMap
@@ -69,15 +71,15 @@ class RemoteNodeClient private constructor(
             runCatching {
                 requestWithRetry(method, path, header, body)
             }.onSuccess { response ->
-                val statusCode = response.code()
-                val responseBody = response.body()
+                val status = response.code
+                val responseBody = response.body
                 if (responseBody == null) {
-                    callback?.onResponse(statusCode, null, null)
+                    callback?.onResponse(status, null, null)
                 } else {
                     val contentType = responseBody.contentType()?.toString()
                     val pipe = ParcelFileDescriptor.createPipe()
 
-                    callback?.onResponse(statusCode, contentType, pipe[0])
+                    callback?.onResponse(status, contentType, pipe[0])
 
                     responseBody.use {
                         pipe[1].use { writeSide ->
@@ -163,16 +165,14 @@ class RemoteNodeClient private constructor(
         body: ByteArray?,
     ): Response {
         val headers = parseHttpHeader(header)
-        val contentType = headers.get("Content-Type")?.let { value ->
-            MediaType.get(value)
-        }
+        val contentType = headers["Content-Type"]?.toMediaType()
         // TODO: Log unsupported headers
         val request = with(Request.Builder()) {
             when {
                 method.equals("GET", ignoreCase = true) -> {}
                 method.equals("POST", ignoreCase = true) -> {
                     val content = body ?: ByteArray(0)
-                    post(RequestBody.create(contentType, content))
+                    post(content.toRequestBody(contentType))
                 }
                 else -> throw IllegalArgumentException("Unsupported method")
             }