diff --git a/nmigen/vendor/lattice_ecp5.py b/nmigen/vendor/lattice_ecp5.py
index c3ca286..c114063 100644
--- a/nmigen/vendor/lattice_ecp5.py
+++ b/nmigen/vendor/lattice_ecp5.py
@@ -103,6 +103,10 @@ class LatticeECP5Platform(TemplatedPlatform):
             # {{autogenerated}}
             {{emit_rtlil()}}
         """,
+        "{{name}}.debug.v": r"""
+            /* {{autogenerated}} */
+            {{emit_debug_verilog()}}
+        """,
         "{{name}}.ys": r"""
             # {{autogenerated}}
             {% for file in platform.iter_extra_files(".v") -%}
diff --git a/nmigen/vendor/lattice_ice40.py b/nmigen/vendor/lattice_ice40.py
index 5a8d197..20a844c 100644
--- a/nmigen/vendor/lattice_ice40.py
+++ b/nmigen/vendor/lattice_ice40.py
@@ -108,6 +108,10 @@ class LatticeICE40Platform(TemplatedPlatform):
             # {{autogenerated}}
             {{emit_rtlil()}}
         """,
+        "{{name}}.debug.v": r"""
+            /* {{autogenerated}} */
+            {{emit_debug_verilog()}}
+        """,
         "{{name}}.ys": r"""
             # {{autogenerated}}
             {% for file in platform.iter_extra_files(".v") -%}