diff --git a/moshi/records-tests/src/test/java/com/squareup/moshi/records/RecordsTest.java b/moshi/records-tests/src/test/java/com/squareup/moshi/records/RecordsTest.java
index 00f613f0d..c31cc5875 100644
--- a/moshi/records-tests/src/test/java/com/squareup/moshi/records/RecordsTest.java
+++ b/moshi/records-tests/src/test/java/com/squareup/moshi/records/RecordsTest.java
@@ -290,5 +290,16 @@ public void nullObjectIsNull() throws IOException {
     assertThat(adapter.toJson(value)).isEqualTo("{\"i\":5}");
   }
 
+  @Test
+  public void privateRecordSerializesCorrectly() throws IOException {
+    var adapter = moshi.adapter(PrivateRecord.class);
+    String json = "{\"id\":\"1\",\"value\":123}";
+    PrivateRecord privateRecord = new PrivateRecord("1", 123);
+    assertThat(adapter.fromJson(json)).isEqualTo(privateRecord);
+    assertThat(adapter.toJson(privateRecord)).isEqualTo(json);
+  }
+
+  private record PrivateRecord(String id, int value) {}
+
   public record AbsentValues(String s, int i) {}
 }
diff --git a/moshi/src/main/java16/com/squareup/moshi/internal/RecordJsonAdapter.kt b/moshi/src/main/java16/com/squareup/moshi/internal/RecordJsonAdapter.kt
index 157466c67..f19911d97 100644
--- a/moshi/src/main/java16/com/squareup/moshi/internal/RecordJsonAdapter.kt
+++ b/moshi/src/main/java16/com/squareup/moshi/internal/RecordJsonAdapter.kt
@@ -128,7 +128,12 @@ internal class RecordJsonAdapter<T>(
 
       val components = rawType.recordComponents
       val bindings = LinkedHashMap<String, ComponentBinding<Any?>>()
-      val lookup = MethodHandles.lookup()
+      var lookup = MethodHandles.lookup()
+      try {
+        lookup = MethodHandles.privateLookupIn(rawType, lookup)
+      } catch (_: IllegalAccessException) {
+        // fallback to standard lookup
+      }
       val componentRawTypes =
         Array<Class<*>>(components.size) { i ->
           val component = components[i]