diff --git a/jeometry-common/src/main/java/org/jeometry/common/collection/map/AbstractRefreshableMap.java b/jeometry-common/src/main/java/org/jeometry/common/collection/map/AbstractRefreshableMap.java
index 8a63e19..47a24ad 100644
--- a/jeometry-common/src/main/java/org/jeometry/common/collection/map/AbstractRefreshableMap.java
+++ b/jeometry-common/src/main/java/org/jeometry/common/collection/map/AbstractRefreshableMap.java
@@ -21,7 +21,7 @@ public AbstractRefreshableMap(final boolean editable) {
   }
 
   @Override
-  public synchronized void clearValue() {
+  public void clearValue() {
     this.value.clear();
   }
 
@@ -47,7 +47,7 @@ protected Map<K, V> getMap() {
   protected abstract Map<K, V> loadValue();
 
   @Override
-  public synchronized void refresh() {
+  public void refresh() {
     this.value.get();
   }