diff --git a/pom.xml b/pom.xml
index 24f54ddc..0a3da974 100644
--- a/pom.xml
+++ b/pom.xml
@@ -111,7 +111,7 @@
             <dependency>
                 <groupId>org.ehcache</groupId>
                 <artifactId>ehcache</artifactId>
-                <version>3.10.8</version>
+                <version>3.9.11</version>
             </dependency>
             <dependency>
                 <groupId>commons-io</groupId>
diff --git a/update.md b/update.md
index 74ca52ed..b0fc5642 100644
--- a/update.md
+++ b/update.md
@@ -3,7 +3,8 @@
 * `poi`由`4.1.2`升级到`5.2.5`
 * `commons-csv`由`1.1.0`升级到`1.10.0`
 * `slf4j-api`由`1.7.32`升级到`1.7.36`
-* `ehcache`由`3.9.9`升级到`3.10.8`
+* `ehcache`由`3.9.9`升级到`3.9.11`
+* 支持`jdk21`
 
 # 3.3.4