diff --git a/okhttp-dnsoverhttps/src/main/java/okhttp3/dnsoverhttps/DnsOverHttps.java b/okhttp-dnsoverhttps/src/main/java/okhttp3/dnsoverhttps/DnsOverHttps.java
index df56442f4..fb6901fe3 100644
--- a/okhttp-dnsoverhttps/src/main/java/okhttp3/dnsoverhttps/DnsOverHttps.java
+++ b/okhttp-dnsoverhttps/src/main/java/okhttp3/dnsoverhttps/DnsOverHttps.java
@@ -34,7 +34,6 @@ import okhttp3.Request;
 import okhttp3.RequestBody;
 import okhttp3.Response;
 import okhttp3.ResponseBody;
-import okhttp3.internal.Util;
 import okhttp3.internal.platform.Platform;
 import okhttp3.internal.publicsuffix.PublicSuffixDatabase;
 import okio.ByteString;
@@ -222,7 +221,7 @@ public class DnsOverHttps implements Dns {
     unknownHostException.initCause(failure);
 
     for (int i = 1; i < failures.size(); i++) {
-      Util.addSuppressedIfPossible(unknownHostException, failures.get(i));
+      unknownHostException.addSuppressed(failures.get(i));
     }
 
     throw unknownHostException;
diff --git a/okhttp/src/main/java/okhttp3/internal/Util.java b/okhttp/src/main/java/okhttp3/internal/Util.java
index 2f535c139..a1d07269a 100644
--- a/okhttp/src/main/java/okhttp3/internal/Util.java
+++ b/okhttp/src/main/java/okhttp3/internal/Util.java
@@ -18,8 +18,6 @@ package okhttp3.internal;
 import java.io.Closeable;
 import java.io.IOException;
 import java.io.InterruptedIOException;
-import java.lang.reflect.InvocationTargetException;
-import java.lang.reflect.Method;
 import java.net.IDN;
 import java.net.InetAddress;
 import java.net.ServerSocket;
@@ -90,27 +88,6 @@ public final class Util {
 
   public static final Comparator<String> NATURAL_ORDER = String::compareTo;
 
-  private static final Method addSuppressedExceptionMethod;
-
-  static {
-    Method m;
-    try {
-      m = Throwable.class.getDeclaredMethod("addSuppressed", Throwable.class);
-    } catch (Exception e) {
-      m = null;
-    }
-    addSuppressedExceptionMethod = m;
-  }
-
-  public static void addSuppressedIfPossible(Throwable e, Throwable suppressed) {
-    if (addSuppressedExceptionMethod != null) {
-      try {
-        addSuppressedExceptionMethod.invoke(e, suppressed);
-      } catch (InvocationTargetException | IllegalAccessException ignored) {
-      }
-    }
-  }
-
   /**
    * Quick and dirty pattern to differentiate IP addresses from hostnames. This is an approximation
    * of Android's private InetAddress#isNumeric API.
diff --git a/okhttp/src/main/java/okhttp3/internal/connection/RouteException.java b/okhttp/src/main/java/okhttp3/internal/connection/RouteException.java
index f6206f7f0..35d3af123 100644
--- a/okhttp/src/main/java/okhttp3/internal/connection/RouteException.java
+++ b/okhttp/src/main/java/okhttp3/internal/connection/RouteException.java
@@ -17,8 +17,6 @@ package okhttp3.internal.connection;
 
 import java.io.IOException;
 
-import static okhttp3.internal.Util.addSuppressedIfPossible;
-
 /**
  * An exception thrown to indicate a problem connecting via a single Route. Multiple attempts may
  * have been made with alternative protocols, none of which were successful.
@@ -42,7 +40,7 @@ public final class RouteException extends RuntimeException {
   }
 
   void addConnectException(IOException e) {
-    addSuppressedIfPossible(firstException, e);
+    firstException.addSuppressed(e);
     lastException = e;
   }
 }