diff --git a/services/zc/app/requirements.txt b/services/zc/app/requirements.txt
index 657b2d4..6a19f95 100644
--- a/services/zc/app/requirements.txt
+++ b/services/zc/app/requirements.txt
@@ -10,7 +10,7 @@ blake3>=0.4.0
 
 ## Protocol Buffers (Optional for wire CLI)
 protobuf>=5.27.0
-grpcio>=1.64.0
+grpcio>=1.82.1
 grpcio-tools>=1.64.0
 
 ## Observability
diff --git a/services/zc/requirements-enterprise.txt b/services/zc/requirements-enterprise.txt
index 00a5b93..40b6b91 100644
--- a/services/zc/requirements-enterprise.txt
+++ b/services/zc/requirements-enterprise.txt
@@ -10,7 +10,7 @@ aiohttp>=3.10.0
 
 # === Protocol Buffers & gRPC ===
 protobuf>=5.28.0
-grpcio>=1.66.0
+grpcio>=1.82.1
 grpcio-tools>=1.66.0
 
 # === High-Performance Serialization ===