diff --git a/spring-boot-demo-task-quartz/README.md b/spring-boot-demo-task-quartz/README.md
index 5796dd0..92d36e6 100644
--- a/spring-boot-demo-task-quartz/README.md
+++ b/spring-boot-demo-task-quartz/README.md
@@ -71,12 +71,6 @@
             <scope>test</scope>
         </dependency>
 
-        <dependency>
-            <groupId>com.mchange</groupId>
-            <artifactId>c3p0</artifactId>
-            <version>0.9.5.2</version>
-        </dependency>
-
         <dependency>
             <groupId>cn.hutool</groupId>
             <artifactId>hutool-all</artifactId>