diff --git a/core/trino-main/src/main/java/io/trino/server/PluginClassLoader.java b/core/trino-main/src/main/java/io/trino/server/PluginClassLoader.java
index e4bdbf8d9366..69c53797171d 100644
--- a/core/trino-main/src/main/java/io/trino/server/PluginClassLoader.java
+++ b/core/trino-main/src/main/java/io/trino/server/PluginClassLoader.java
@@ -23,8 +23,10 @@
 import java.util.List;
 import java.util.Optional;
 
+import static com.google.common.base.MoreObjects.toStringHelper;
 import static com.google.common.base.Preconditions.checkState;
 import static com.google.common.collect.ImmutableList.toImmutableList;
+import static java.lang.System.identityHashCode;
 import static java.util.Objects.requireNonNull;
 
 public class PluginClassLoader
@@ -92,6 +94,17 @@ public String getId()
         return pluginName + catalogName.map(name -> ":" + name).orElse("");
     }
 
+    @Override
+    public String toString()
+    {
+        return toStringHelper(this)
+                .omitNullValues()
+                .add("pluginName", pluginName)
+                .add("catalogName", catalogName.orElse(null))
+                .add("identityHash", "@" + Integer.toHexString(identityHashCode(this)))
+                .toString();
+    }
+
     @Override
     protected Class<?> loadClass(String name, boolean resolve)
             throws ClassNotFoundException