diff --git a/pbj-core/hiero-dependency-versions/build.gradle.kts b/pbj-core/hiero-dependency-versions/build.gradle.kts
index c18a4343..acdfee68 100644
--- a/pbj-core/hiero-dependency-versions/build.gradle.kts
+++ b/pbj-core/hiero-dependency-versions/build.gradle.kts
@@ -2,7 +2,7 @@
 group = "com.hedera.hashgraph"
 
 val antlr = "4.13.2"
-val grpc = "1.76.0"
+val grpc = "1.78.0"
 val helidon = "4.3.2"
 val protobuf = "4.33.2"