diff --git a/buildtools/grpc/BUILD.gn b/buildtools/grpc/BUILD.gn
index 16ca941..a13fb50 100644
--- a/buildtools/grpc/BUILD.gn
+++ b/buildtools/grpc/BUILD.gn
@@ -4924,7 +4924,9 @@
     ":address_sorting",
     ":boringssl",
     ":gpr",
+    ":re2",
     ":upb",
+    "../../gn:zlib",
   ]
   public_configs = [ "..:grpc_internal_config" ]
   configs -= [ "//gn/standalone:extra_warnings" ]
@@ -6396,6 +6398,7 @@
     ":absl_types_span",
     ":absl_utility_utility",
     ":gpr",
+    ":re2",
     ":upb",
   ]
   public_configs = [ "..:grpc_internal_config" ]
diff --git a/tools/gen_grpc_build_gn.py b/tools/gen_grpc_build_gn.py
index 48993ca..98e9083 100755
--- a/tools/gen_grpc_build_gn.py
+++ b/tools/gen_grpc_build_gn.py
@@ -94,6 +94,10 @@
 def get_deps_for_target(target: str) -> List[str]:
   if target == 'grpc_plugin_support':
     return ['..:protoc_lib']
+  if target == 'grpc':
+    return [':re2', '../../gn:zlib']
+  if target == 'grpc_authorization_provider':
+    return [':re2']
   return []