diff --git a/utils/bazel/llvm-project-overlay/libc/test/UnitTest/BUILD.bazel b/utils/bazel/llvm-project-overlay/libc/test/UnitTest/BUILD.bazel
--- a/utils/bazel/llvm-project-overlay/libc/test/UnitTest/BUILD.bazel
+++ b/utils/bazel/llvm-project-overlay/libc/test/UnitTest/BUILD.bazel
@@ -108,6 +108,7 @@
         "StringUtils.h",
     ],
     deps = [
+        "//libc:__support_cpp_string",
         "//libc:__support_cpp_type_traits",
     ],
 )