diff --git a/utils/bazel/llvm-project-overlay/libc/test/src/stdlib/BUILD.bazel b/utils/bazel/llvm-project-overlay/libc/test/src/stdlib/BUILD.bazel
index 53b400ac0d5934..e4b4b075705e8a 100644
--- a/utils/bazel/llvm-project-overlay/libc/test/src/stdlib/BUILD.bazel
+++ b/utils/bazel/llvm-project-overlay/libc/test/src/stdlib/BUILD.bazel
@@ -161,6 +161,7 @@ libc_support_library(
     deps = [
         "//libc:__support_cpp_limits",
         "//libc:__support_cpp_type_traits",
+        "//libc:__support_ctype_utils",
         "//libc:__support_macros_properties_architectures",
         "//libc:errno.__internal__",
         "//libc/test/UnitTest:LibcUnitTest",