diff --git a/utils/bazel/llvm-project-overlay/llvm/BUILD.bazel b/utils/bazel/llvm-project-overlay/llvm/BUILD.bazel
--- a/utils/bazel/llvm-project-overlay/llvm/BUILD.bazel
+++ b/utils/bazel/llvm-project-overlay/llvm/BUILD.bazel
@@ -4417,22 +4417,39 @@
 cc_library(
     name = "TestingSupport",
     testonly = True,
-    srcs = glob([
-        "lib/Testing/Support/*.cpp",
-        "lib/Testing/Support/*.h",
-    ]),
-    hdrs = glob([
-        "include/llvm/Testing/Support/*.h",
-    ]),
+    srcs = glob(
+        [
+            "lib/Testing/Support/*.cpp",
+            "lib/Testing/Support/*.h",
+        ],
+        exclude = ["lib/Testing/Support/Annotations.cpp"],
+    ),
+    hdrs = glob(
+        [
+            "include/llvm/Testing/Support/*.h",
+        ],
+        exclude = ["include/llvm/Testing/Support/Annotations.h"],
+    ),
     copts = llvm_copts,
     deps = [
         ":Support",
+        ":TestingAnnotations",
         ":config",
         "//third-party/unittest:gmock",
         "//third-party/unittest:gtest",
     ],
 )
 
+# Split out of TestingSupport to allow using this with a different gmock/gtest version.
+cc_library(
+    name = "TestingAnnotations",
+    testonly = True,
+    srcs = ["lib/Testing/Support/Annotations.cpp"],
+    hdrs = ["include/llvm/Testing/Support/Annotations.h"],
+    copts = llvm_copts,
+    deps = [":Support"],
+)
+
 ################################################################################
 # Begin testonly binary utilities