diff --git a/hiero-dependency-versions/build.gradle.kts b/hiero-dependency-versions/build.gradle.kts
index 5d6a89354..bb6d8c286 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 = "1.72.0"
 val protobuf = "4.30.0"
 val slf4j = "2.0.17"