diff --git a/flink-tutorial/pom.xml b/flink-tutorial/pom.xml
index f0a508a..52e41ab 100644
--- a/flink-tutorial/pom.xml
+++ b/flink-tutorial/pom.xml
@@ -71,7 +71,7 @@
         <dependency>
             <groupId>org.bouncycastle</groupId>
             <artifactId>bcprov-jdk15on</artifactId>
-            <version>1.51</version>
+            <version>1.67</version>
             <scope>compile</scope>
         </dependency>
     </dependencies>