diff --git a/hiero-dependency-versions/build.gradle.kts b/hiero-dependency-versions/build.gradle.kts
index fb8d457d7..3e161e7cf 100644
--- a/hiero-dependency-versions/build.gradle.kts
+++ b/hiero-dependency-versions/build.gradle.kts
@@ -8,7 +8,7 @@ plugins {
 
 group = "org.hiero"
 
-val bouncycastle = "1.80"
+val bouncycastle = "1.81"
 val grpc = "1.74.0"
 val protobuf = "4.31.1"
 val slf4j = "2.0.17"