diff --git a/bc/pom.xml b/bc/pom.xml
index 44e33b2..80bdd64 100644
--- a/bc/pom.xml
+++ b/bc/pom.xml
@@ -19,7 +19,7 @@
     </dependency>
     <dependency>
       <groupId>org.bouncycastle</groupId>
-      <artifactId>bcpkix-jdk15on</artifactId>
+      <artifactId>bcpkix-jdk18on</artifactId>
     </dependency>
   </dependencies>
 </project>
diff --git a/pom.xml b/pom.xml
index 16cf8f1..a7dfd6a 100644
--- a/pom.xml
+++ b/pom.xml
@@ -39,8 +39,8 @@
       </dependency>
       <dependency>
         <groupId>org.bouncycastle</groupId>
-        <artifactId>bcpkix-jdk15on</artifactId>
-        <version>1.64</version>
+        <artifactId>bcpkix-jdk18on</artifactId>
+        <version>1.77</version>
       </dependency>
       <!-- own modules -->
       <dependency>