diff --git a/querydsl-libraries/querydsl-core/src/main/java/com/querydsl/core/QueryModifiers.java b/querydsl-libraries/querydsl-core/src/main/java/com/querydsl/core/QueryModifiers.java
index 9690f40042..01c3348571 100644
--- a/querydsl-libraries/querydsl-core/src/main/java/com/querydsl/core/QueryModifiers.java
+++ b/querydsl-libraries/querydsl-core/src/main/java/com/querydsl/core/QueryModifiers.java
@@ -13,6 +13,7 @@
  */
 package com.querydsl.core;
 
+import com.querydsl.core.annotations.Immutable;
 import java.io.Serial;
 import java.io.Serializable;
 import java.util.List;
@@ -25,6 +26,7 @@
  *
  * @author tiwe
  */
+@Immutable
 public final class QueryModifiers implements Serializable {
 
   @Serial private static final long serialVersionUID = 2934344588433680339L;
diff --git a/querydsl-libraries/querydsl-sql/src/main/java/com/querydsl/sql/SchemaAndTable.java b/querydsl-libraries/querydsl-sql/src/main/java/com/querydsl/sql/SchemaAndTable.java
index b0f3a771a7..8cfd961d5b 100644
--- a/querydsl-libraries/querydsl-sql/src/main/java/com/querydsl/sql/SchemaAndTable.java
+++ b/querydsl-libraries/querydsl-sql/src/main/java/com/querydsl/sql/SchemaAndTable.java
@@ -13,10 +13,12 @@
  */
 package com.querydsl.sql;
 
+import com.querydsl.core.annotations.Immutable;
 import java.io.Serializable;
 import java.util.Objects;
 
 /** {@code SchemaAndTable} combines schema and table into a single value type */
+@Immutable
 public class SchemaAndTable implements Serializable {
 
   private final String schema, table;