diff --git a/protocols/grpc/BUCK b/protocols/grpc/BUCK
index bcd74a5..7c91c47 100644
--- a/protocols/grpc/BUCK
+++ b/protocols/grpc/BUCK
@@ -1,4 +1,4 @@
-PROTOBUF_VER = '3.0.2'
+PROTOBUF_VER = '3.2.0'
 GRPC_VER = '1.3.0'
 
 BUNDLES = [
@@ -13,7 +13,7 @@
     '//lib:grpc-netty-1.3.0',
     '//lib:grpc-auth-1.3.0',
     '//lib:google-instrumentation-0.3.0',
-    '//lib:protobuf-java-3.0.2',
+    '//lib:protobuf-java-3.2.0',
     # Lazily adding all netty-related packages.
     # Some of them might not be necessary.
     '//lib:netty',
diff --git a/protocols/grpc/ctl/BUCK b/protocols/grpc/ctl/BUCK
index ad855fd..e0c2b6d 100644
--- a/protocols/grpc/ctl/BUCK
+++ b/protocols/grpc/ctl/BUCK
@@ -1,4 +1,4 @@
-PROTOBUF_VER = '3.0.2'
+PROTOBUF_VER = '3.2.0'
 GRPC_VER = '1.3.0'
 
 COMPILE_DEPS = [
diff --git a/protocols/grpc/proto/BUCK b/protocols/grpc/proto/BUCK
index f0df65d..8d32ab1 100644
--- a/protocols/grpc/proto/BUCK
+++ b/protocols/grpc/proto/BUCK
@@ -2,7 +2,7 @@
     '//bucklets/grpc.bucklet'
 )
 
-PROTOBUF_VER = '3.0.2'
+PROTOBUF_VER = '3.2.0'
 GRPC_VER = '1.3.0'
 
 COMPILE_DEPS = [