diff --git a/utils/bazel/llvm-project-overlay/llvm/unittests/BUILD.bazel b/utils/bazel/llvm-project-overlay/llvm/unittests/BUILD.bazel
index dcac33b0311e..f1fa27bcb5e9 100644
--- a/utils/bazel/llvm-project-overlay/llvm/unittests/BUILD.bazel
+++ b/utils/bazel/llvm-project-overlay/llvm/unittests/BUILD.bazel
@@ -286,7 +286,8 @@ cc_test(
 
 cc_test(
     name = "ir_tests",
-    size = "medium",  # ConstantRangeTest cases may take several seconds each.
+    size = "medium",
+    timeout = "long",  # ConstantRangeTest cases may take several seconds each.
     srcs = glob(
         [
             "IR/*.cpp",