diff --git a/platform/util/src/com/intellij/util/containers/ConcurrentHashMap.java b/platform/util/src/com/intellij/util/containers/ConcurrentHashMap.java
index 0982a45e0ec8..26c681d738f3 100644
--- a/platform/util/src/com/intellij/util/containers/ConcurrentHashMap.java
+++ b/platform/util/src/com/intellij/util/containers/ConcurrentHashMap.java
@@ -229,7 +229,7 @@ import java.util.concurrent.locks.LockSupport;
  * @since 1.5
  * @deprecated Use {@link ContainerUtil#newConcurrentMap()} instead
  */
-public class ConcurrentHashMap<K, V> extends AbstractMap<K, V>
+public final class ConcurrentHashMap<K, V> extends AbstractMap<K, V>
   implements ConcurrentMap<K, V>, TObjectHashingStrategy<K> {
 
     /*
diff --git a/platform/util/src/com/intellij/util/containers/ConcurrentWeakHashMap.java b/platform/util/src/com/intellij/util/containers/ConcurrentWeakHashMap.java
index 53b9eb1c2361..9db1ca96b546 100644
--- a/platform/util/src/com/intellij/util/containers/ConcurrentWeakHashMap.java
+++ b/platform/util/src/com/intellij/util/containers/ConcurrentWeakHashMap.java
@@ -35,7 +35,7 @@ import java.util.Map;
  * Null values are NOT allowed
  * @deprecated Use {@link ContainerUtil#createConcurrentWeakMap()} instead
  */
-final class ConcurrentWeakHashMap<K, V> extends ConcurrentRefHashMap<K, V> {
+public final class ConcurrentWeakHashMap<K, V> extends ConcurrentRefHashMap<K, V> {
   private static class WeakKey<K, V> extends WeakReference<K> implements KeyReference<K, V> {
     private final int myHash; /* Hashcode of key, stored here since the key may be tossed by the GC */
     @NotNull private final TObjectHashingStrategy<K> myStrategy;