diff --git a/build.gradle b/build.gradle
index b34e80cb..d131fc2b 100644
--- a/build.gradle
+++ b/build.gradle
@@ -41,7 +41,7 @@ compileJava {
 
 configurations.implementation.transitive = false
 
-def bouncycastleVersion = "1.75"
+def bouncycastleVersion = "1.78"
 def sshdVersion = "2.10.0"
 
 dependencies {