Update BUILD
diff --git a/BUILD b/BUILD
index 77ea833..1ea7312 100644
--- a/BUILD
+++ b/BUILD
@@ -75,6 +75,7 @@
         "grpc_transport_chttp2_client_secure",
         "grpc_transport_chttp2_server_insecure",
         "grpc_transport_chttp2_server_secure",
+        "grpc_max_age_filter",
     ],
 )
 
@@ -112,6 +113,7 @@
         "grpc_resolver_sockaddr",
         "grpc_transport_chttp2_client_insecure",
         "grpc_transport_chttp2_server_insecure",
+        "grpc_max_age_filter",
     ],
 )
 
@@ -436,7 +438,6 @@
         "src/core/lib/channel/handshaker_registry.c",
         "src/core/lib/channel/http_client_filter.c",
         "src/core/lib/channel/http_server_filter.c",
-        "src/core/ext/filters/max_age/max_age_filter.c",
         "src/core/lib/channel/message_size_filter.c",
         "src/core/lib/compression/compression.c",
         "src/core/lib/compression/message_compress.c",
@@ -564,7 +565,6 @@
         "src/core/lib/channel/handshaker_registry.h",
         "src/core/lib/channel/http_client_filter.h",
         "src/core/lib/channel/http_server_filter.h",
-        "src/core/ext/filters/max_age/max_age_filter.h",
         "src/core/lib/channel/message_size_filter.h",
         "src/core/lib/compression/algorithm_metadata.h",
         "src/core/lib/compression/message_compress.h",
@@ -737,6 +737,20 @@
 )
 
 grpc_cc_library(
+    name = "grpc_max_age_filter",
+    srcs = [
+        "src/core/ext/filters/max_age/max_age_filter.c",
+    ],
+    hdrs = [
+        "src/core/ext/filters/max_age/max_age_filter.h",
+    ],
+    language = "c",
+    deps = [
+        "grpc_base",
+    ],
+)
+
+grpc_cc_library(
     name = "grpc_codegen",
     language = "c",
     public_hdrs = [