diff --git a/build.gradle.kts b/build.gradle.kts
index 14076486..8087d1f5 100644
--- a/build.gradle.kts
+++ b/build.gradle.kts
@@ -56,7 +56,7 @@ allprojects {
       // https://docs.gradle.org/current/userguide/resolution_rules.html
       dependencySubstitution {
         substitute(module("org.bouncycastle:bcpkix-jdk15on"))
-            .using(module("org.bouncycastle:bcpkix-jdk18on:1.78.1"))
+            .using(module("org.bouncycastle:bcpkix-jdk18on:1.79"))
       }
     }
   }
diff --git a/client/build.gradle.kts b/client/build.gradle.kts
index b0164afa..6d032d21 100644
--- a/client/build.gradle.kts
+++ b/client/build.gradle.kts
@@ -118,7 +118,7 @@ dependencies {
 
   implementation("org.apache.commons:commons-compress:1.27.1")
 
-  implementation("org.bouncycastle:bcpkix-jdk18on:1.78.1")
+  implementation("org.bouncycastle:bcpkix-jdk18on:1.79")
 
   testImplementation("de.gesellix:testutil:[2024-01-01T01-01-01,)")