diff --git a/utils/bazel/llvm-project-overlay/mlir/test/Dialect/BUILD.bazel b/utils/bazel/llvm-project-overlay/mlir/test/Dialect/BUILD.bazel
--- a/utils/bazel/llvm-project-overlay/mlir/test/Dialect/BUILD.bazel
+++ b/utils/bazel/llvm-project-overlay/mlir/test/Dialect/BUILD.bazel
@@ -17,6 +17,7 @@
             "Transform/*-source.mlir",
             "Transform/*-symbol-def.mlir",
             "Transform/*-symbol-decl-and-schedule.mlir",
+            "IRDL/*.irdl.mlir",
         ])
     )
     for src in glob(
@@ -25,6 +26,25 @@
             "Transform/*-source.mlir",
             "Transform/*-symbol-def.mlir",
             "Transform/*-symbol-decl-and-schedule.mlir",
+            "IRDL/*.irdl.mlir",
         ]
     )
 ]
+
+# IRDL tests are separate because these files are used as data above, and
+# cannot be both data and source.
+[
+    lit_test(
+        name = "%s.test" % src,
+        srcs = [src],
+        data = [
+            "//llvm:llvm-symbolizer",
+            "//mlir:mlir-opt",
+            "//mlir:mlir-translate",
+            "//mlir/test:lit_data",
+        ]
+    )
+    for src in glob(
+        include=["IRDL/*.irdl.mlir"],
+    )
+]