diff --git a/tests/cocotb/apb3/smoke/test_runner.py b/tests/cocotb/apb3/smoke/test_runner.py
index 6c193bb..9b11bb9 100644
--- a/tests/cocotb/apb3/smoke/test_runner.py
+++ b/tests/cocotb/apb3/smoke/test_runner.py
@@ -24,7 +24,7 @@ from tests.cocotb_lib.utils import get_verilog_sources, prepare_cpuif_case
 def test_apb3_smoke(tmp_path: Path, rdl_file: str, top_name: str) -> None:
     """Compile each APB3 design variant and execute the cocotb smoke test."""
     repo_root = Path(__file__).resolve().parents[4]
-    rdl_path = repo_root / "tests" / "cocotb_lib" / rdl_file
+    rdl_path = repo_root / "tests" / "cocotb_lib" / "rdl" / rdl_file
     build_root = tmp_path / top_name
 
     module_path, package_path, config = prepare_cpuif_case(
diff --git a/tests/cocotb/apb4/smoke/test_runner.py b/tests/cocotb/apb4/smoke/test_runner.py
index 8e0ebe5..b95d24e 100644
--- a/tests/cocotb/apb4/smoke/test_runner.py
+++ b/tests/cocotb/apb4/smoke/test_runner.py
@@ -24,7 +24,7 @@ from tests.cocotb_lib.utils import get_verilog_sources, prepare_cpuif_case
 def test_apb4_smoke(tmp_path: Path, rdl_file: str, top_name: str) -> None:
     """Compile each APB4 design variant and execute the cocotb smoke test."""
     repo_root = Path(__file__).resolve().parents[4]
-    rdl_path = repo_root / "tests" / "cocotb_lib" / rdl_file
+    rdl_path = repo_root / "tests" / "cocotb_lib" / "rdl" / rdl_file
     build_root = tmp_path / top_name
 
     module_path, package_path, config = prepare_cpuif_case(
diff --git a/tests/cocotb/axi4lite/smoke/test_runner.py b/tests/cocotb/axi4lite/smoke/test_runner.py
index 2c21500..1360d50 100644
--- a/tests/cocotb/axi4lite/smoke/test_runner.py
+++ b/tests/cocotb/axi4lite/smoke/test_runner.py
@@ -24,7 +24,7 @@ from tests.cocotb_lib.utils import get_verilog_sources, prepare_cpuif_case
 def test_axi4lite_smoke(tmp_path: Path, rdl_file: str, top_name: str) -> None:
     """Compile each AXI4-Lite design variant and execute the cocotb smoke test."""
     repo_root = Path(__file__).resolve().parents[4]
-    rdl_path = repo_root / "tests" / "cocotb_lib" / rdl_file
+    rdl_path = repo_root / "tests" / "cocotb_lib" / "rdl" / rdl_file
     build_root = tmp_path / top_name
 
     module_path, package_path, config = prepare_cpuif_case(
diff --git a/tests/cocotb_lib/asymmetric_bus.rdl b/tests/cocotb_lib/rdl/asymmetric_bus.rdl
similarity index 100%
rename from tests/cocotb_lib/asymmetric_bus.rdl
rename to tests/cocotb_lib/rdl/asymmetric_bus.rdl
diff --git a/tests/cocotb_lib/deep_hierarchy.rdl b/tests/cocotb_lib/rdl/deep_hierarchy.rdl
similarity index 100%
rename from tests/cocotb_lib/deep_hierarchy.rdl
rename to tests/cocotb_lib/rdl/deep_hierarchy.rdl
diff --git a/tests/cocotb_lib/multiple_reg.rdl b/tests/cocotb_lib/rdl/multiple_reg.rdl
similarity index 100%
rename from tests/cocotb_lib/multiple_reg.rdl
rename to tests/cocotb_lib/rdl/multiple_reg.rdl
diff --git a/tests/cocotb_lib/simple.rdl b/tests/cocotb_lib/rdl/simple.rdl
similarity index 100%
rename from tests/cocotb_lib/simple.rdl
rename to tests/cocotb_lib/rdl/simple.rdl
diff --git a/tests/cocotb_lib/variable_layout.rdl b/tests/cocotb_lib/rdl/variable_layout.rdl
similarity index 100%
rename from tests/cocotb_lib/variable_layout.rdl
rename to tests/cocotb_lib/rdl/variable_layout.rdl
diff --git a/tests/cocotb_lib/wide_status.rdl b/tests/cocotb_lib/rdl/wide_status.rdl
similarity index 100%
rename from tests/cocotb_lib/wide_status.rdl
rename to tests/cocotb_lib/rdl/wide_status.rdl