diff --git a/bp2build/cc_library_conversion_test.go b/bp2build/cc_library_conversion_test.go
index 28dbf7e..05d2e6a 100644
--- a/bp2build/cc_library_conversion_test.go
+++ b/bp2build/cc_library_conversion_test.go
@@ -4965,6 +4965,7 @@
 		}),
 		MakeBazelTarget("proto_library", "foo_proto", AttrNameToString{
 			"srcs": `["foo.proto"]`,
+			"tags": `["manual"]`,
 		}),
 		MakeBazelTarget("cc_lite_proto_library", "foo_cc_proto_lite", AttrNameToString{
 			"deps": `[
@@ -5033,6 +5034,7 @@
 		MakeBazelTarget("proto_library", "foo_proto", AttrNameToString{
 			"srcs":                `["foo.proto"]`,
 			"strip_import_prefix": `""`,
+			"tags":                `["manual"]`,
 		}),
 		MakeBazelTarget("cc_lite_proto_library", "foo_cc_proto_lite", AttrNameToString{
 			"deps": `[
@@ -5103,6 +5105,7 @@
 		}),
 		MakeBazelTarget("proto_library", "foo_proto", AttrNameToString{
 			"srcs": `["foo.proto"]`,
+			"tags": `["manual"]`,
 		}),
 		MakeBazelTarget("cc_lite_proto_library", "foo_cc_proto_lite", AttrNameToString{
 			"deps": `[":foo_proto"]`,