diff --git a/tools/run_tests/sanity/cpp_banned_constructs.sh b/tools/run_tests/sanity/cpp_banned_constructs.sh
index 55cf252d827..14716f01467 100755
--- a/tools/run_tests/sanity/cpp_banned_constructs.sh
+++ b/tools/run_tests/sanity/cpp_banned_constructs.sh
@@ -29,3 +29,12 @@ egrep -Irn \
     egrep -v include/grpcpp/impl/codegen/sync.h | \
     diff - /dev/null
 
+#
+# Prevent the include of disallowed C++ headers.
+#
+
+egrep -Irn \
+    '^#include (<mutex>|<condition_variable>|<thread>|<ratio>|<filesystem>|<future>|<system_error>)' \
+    include/grpc include/grpcpp src/core src/cpp | \
+    egrep -v include/grpcpp/impl/codegen/sync.h | \
+    diff - /dev/null