diff --git a/oidc-playground-server/pom.xml b/oidc-playground-server/pom.xml
index 76eb7c0..8b1374e 100644
--- a/oidc-playground-server/pom.xml
+++ b/oidc-playground-server/pom.xml
@@ -48,7 +48,7 @@
         <dependency>
             <groupId>org.bouncycastle</groupId>
             <artifactId>bcprov-jdk18on</artifactId>
-            <version>1.78.1</version>
+            <version>1.84</version>
         </dependency>
         <dependency>
             <groupId>commons-io</groupId>