diff --git a/test/core/util/BUILD b/test/core/util/BUILD
index b519c306ca06a..2bd78a044f81e 100644
--- a/test/core/util/BUILD
+++ b/test/core/util/BUILD
@@ -49,6 +49,7 @@ TEST_UTILS_THAT_USE_GRPC_H_HEADERS = [
 
 grpc_cc_library(
     name = "proto_bit_gen",
+    external_deps = ["absl/types:variant"],
     language = "c++",
     public_hdrs = ["proto_bit_gen.h"],
     deps = ["//:gpr_platform"],
diff --git a/test/core/util/proto_bit_gen.h b/test/core/util/proto_bit_gen.h
index a43c21e64897a..508e928f635f5 100644
--- a/test/core/util/proto_bit_gen.h
+++ b/test/core/util/proto_bit_gen.h
@@ -24,6 +24,8 @@
 #include <random>
 #include <vector>
 
+#include "absl/types/variant.h"
+
 namespace grpc_core {
 
 // Set of random numbers from a proto file (or other container) forming a bit