diff --git a/library/build.gradle b/library/build.gradle
index 75674482a..c1b373230 100644
--- a/library/build.gradle
+++ b/library/build.gradle
@@ -138,7 +138,7 @@ android {
     }
 
     defaultConfig {
-        minSdkVersion 14
+        minSdkVersion 19
         targetSdkVersion 35
 
         testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
diff --git a/library/src/main/java/com/nextcloud/common/OkHttpCredentialsUtil.kt b/library/src/main/java/com/nextcloud/common/OkHttpCredentialsUtil.kt
deleted file mode 100644
index 9f22b37d5..000000000
--- a/library/src/main/java/com/nextcloud/common/OkHttpCredentialsUtil.kt
+++ /dev/null
@@ -1,28 +0,0 @@
-/*
- * Nextcloud Android Library
- *
- * SPDX-FileCopyrightText: 2021-2024 Nextcloud GmbH and Nextcloud contributors
- * SPDX-FileCopyrightText: 2021 Álvaro Brey <alvaro@alvarobrey.com>
- * SPDX-License-Identifier: MIT
- */
-package com.nextcloud.common
-
-import android.os.Build
-import okhttp3.Credentials
-import java.nio.charset.StandardCharsets
-
-object OkHttpCredentialsUtil {
-    /**
-     * Builds basic OKHttp credentials string, using UTF_8 if available
-     */
-    @JvmStatic
-    fun basic(
-        username: String,
-        password: String
-    ): String =
-        when {
-            Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT ->
-                Credentials.basic(username, password, StandardCharsets.UTF_8)
-            else -> Credentials.basic(username, password)
-        }
-}
diff --git a/library/src/main/java/com/owncloud/android/lib/common/OwnCloudAnonymousCredentials.java b/library/src/main/java/com/owncloud/android/lib/common/OwnCloudAnonymousCredentials.java
index 2012e697e..c28062644 100644
--- a/library/src/main/java/com/owncloud/android/lib/common/OwnCloudAnonymousCredentials.java
+++ b/library/src/main/java/com/owncloud/android/lib/common/OwnCloudAnonymousCredentials.java
@@ -10,7 +10,9 @@
 
 import android.os.Parcel;
 
-import com.nextcloud.common.OkHttpCredentialsUtil;
+import java.nio.charset.StandardCharsets;
+
+import okhttp3.Credentials;
 
 public class OwnCloudAnonymousCredentials implements OwnCloudCredentials {
 
@@ -35,7 +37,7 @@ public boolean authTokenExpires() {
 
     @Override
     public String toOkHttpCredentials() {
-        return OkHttpCredentialsUtil.basic(getUsername(), getAuthToken());
+        return Credentials.basic(getUsername(), getAuthToken(), StandardCharsets.UTF_8);
     }
 
     @Override
diff --git a/library/src/main/java/com/owncloud/android/lib/common/OwnCloudBasicCredentials.java b/library/src/main/java/com/owncloud/android/lib/common/OwnCloudBasicCredentials.java
index df5b87c1b..ea0b46222 100644
--- a/library/src/main/java/com/owncloud/android/lib/common/OwnCloudBasicCredentials.java
+++ b/library/src/main/java/com/owncloud/android/lib/common/OwnCloudBasicCredentials.java
@@ -14,15 +14,16 @@
 
 import android.os.Parcel;
 
-import com.nextcloud.common.OkHttpCredentialsUtil;
-
 import org.apache.commons.httpclient.UsernamePasswordCredentials;
 import org.apache.commons.httpclient.auth.AuthPolicy;
 import org.apache.commons.httpclient.auth.AuthScope;
 
+import java.nio.charset.StandardCharsets;
 import java.util.ArrayList;
 import java.util.List;
 
+import okhttp3.Credentials;
+
 public class OwnCloudBasicCredentials implements OwnCloudCredentials {
 
     private String username;
@@ -59,11 +60,9 @@ public boolean authTokenExpires() {
 
     @Override
     public String toOkHttpCredentials() {
-        return OkHttpCredentialsUtil.basic(username, authToken);
+        return Credentials.basic(username, authToken, StandardCharsets.UTF_8);
     }
 
-
-
     /*
      * Autogenerated Parcelable interface
      */
diff --git a/library/src/main/java/com/owncloud/android/lib/common/OwnCloudClientFactory.java b/library/src/main/java/com/owncloud/android/lib/common/OwnCloudClientFactory.java
index 42cfdff9b..61e5e8d47 100644
--- a/library/src/main/java/com/owncloud/android/lib/common/OwnCloudClientFactory.java
+++ b/library/src/main/java/com/owncloud/android/lib/common/OwnCloudClientFactory.java
@@ -23,7 +23,6 @@
 import android.os.Bundle;
 
 import com.nextcloud.common.NextcloudClient;
-import com.nextcloud.common.OkHttpCredentialsUtil;
 import com.nextcloud.common.User;
 import com.owncloud.android.lib.common.accounts.AccountTypeUtils;
 import com.owncloud.android.lib.common.accounts.AccountUtils;
@@ -32,8 +31,11 @@
 import com.owncloud.android.lib.common.utils.Log_OC;
 
 import java.io.IOException;
+import java.nio.charset.StandardCharsets;
 import java.security.GeneralSecurityException;
 
+import okhttp3.Credentials;
+
 public class OwnCloudClientFactory {
     
     final private static String TAG = OwnCloudClientFactory.class.getSimpleName();
@@ -223,7 +225,7 @@ public static NextcloudClient createNextcloudClient(Account account, Context app
 
         return createNextcloudClient(baseUri,
                                      userId,
-                                     OkHttpCredentialsUtil.basic(username, password),
+                                     Credentials.basic(username, password, StandardCharsets.UTF_8),
                                      appContext,
                                      true);
     }
diff --git a/sample_client/build.gradle b/sample_client/build.gradle
index 951b1a1b8..11194545d 100644
--- a/sample_client/build.gradle
+++ b/sample_client/build.gradle
@@ -41,7 +41,7 @@ android {
     }
 
     defaultConfig {
-        minSdkVersion 14
+        minSdkVersion 19
         targetSdkVersion 35
 
         multiDexEnabled true