diff --git a/check-linuxcnc-wasm-blockers-source-map.sh b/check-linuxcnc-wasm-blockers-source-map.sh
index 3c8669e..74ff735 100755
--- a/check-linuxcnc-wasm-blockers-source-map.sh
+++ b/check-linuxcnc-wasm-blockers-source-map.sh
@@ -102,22 +102,38 @@ if sections.get("dlopen") != ["(none)"]:
 if sections.get("tooldata-users") != ["(none)"]:
     raise SystemExit("blocked tooldata-users section is no longer empty")
 
-required_entries = [
+required_tracked_entries = [
     "src/emc/rs274ngc/gcodemodule.cc",
     "src/emc/rs274ngc/interpmodule.cc",
     "src/emc/tooldata/tooldata_mmap.cc",
     "src/emc/rs274ngc/interp_base.cc",
     "src/emc/rs274ngc/interp_o_word.cc",
     "src/emc/rs274ngc/rs274ngc_pre.cc",
-    "src/emc/tooldata/tooldata_mmap.cc -> core/wasm_shims/tooldata/tooldata_mmap_backend.cc",
-    "src/emc/rs274ngc/gcodemodule.cc -> core/wasm_shims/linuxcnc_runtime_shim.cc",
-    "src/emc/rs274ngc/pyparamclass.cc -> core/wasm_shims/python_c_api_shim.cc",
 ]
-for entry in required_entries:
+required_replacements = [
+    "src/emc/rs274ngc/canonmodule.cc -> core/wasm_shims/linuxcnc_runtime_shim.cc",
+    "src/emc/rs274ngc/gcodemodule.cc -> core/wasm_shims/linuxcnc_runtime_shim.cc",
+    "src/emc/rs274ngc/interpmodule.cc -> core/wasm_shims/linuxcnc_runtime_shim.cc",
+    "src/emc/rs274ngc/pyarrays.cc -> core/wasm_shims/python_c_api_shim.cc",
+    "src/emc/rs274ngc/pyblock.cc -> core/wasm_shims/python_c_api_shim.cc",
+    "src/emc/rs274ngc/pyemctypes.cc -> core/wasm_shims/python_c_api_shim.cc",
+    "src/emc/rs274ngc/pyinterp1.cc -> core/wasm_shims/python_c_api_shim.cc",
+    "src/emc/rs274ngc/pyparamclass.cc -> core/wasm_shims/python_c_api_shim.cc",
+    "src/emc/tooldata/tooldata_mmap.cc -> core/wasm_shims/tooldata/tooldata_mmap_backend.cc",
+]
+for entry in required_tracked_entries:
     if entry not in output:
         raise SystemExit(f"WASM blocker analyzer output missing required entry: {entry}")
     if entry not in source_map:
         raise SystemExit(f"docs/linuxcnc-wasm-blockers-source-map.md missing required entry: {entry}")
+replacement_entries = [entry for entry in sections.get("blocked-replacements", []) if entry != "(none)"]
+if replacement_entries != required_replacements:
+    raise SystemExit(f"WASM blocker replacement set changed: {replacement_entries}")
+if "Required replacement set:" not in source_map:
+    raise SystemExit("docs/linuxcnc-wasm-blockers-source-map.md must document the complete replacement set")
+for entry in required_replacements:
+    if entry not in source_map:
+        raise SystemExit(f"docs/linuxcnc-wasm-blockers-source-map.md missing required replacement: {entry}")
 
 shim_paths = set(Path(line).as_posix() for line in subprocess.check_output(
     ["./list-linuxcnc-wasm-safe-shims.sh"],
diff --git a/docs/linuxcnc-wasm-blockers-source-map.md b/docs/linuxcnc-wasm-blockers-source-map.md
index 813dd97..dec93f5 100644
--- a/docs/linuxcnc-wasm-blockers-source-map.md
+++ b/docs/linuxcnc-wasm-blockers-source-map.md
@@ -46,11 +46,17 @@ a source-link/build guard only; it does not add CNC behavior and must not become
 | `core-tooldata-users-shimmed` | 2 | Core RS274/NML users of tooldata declarations. |
 | `core-native-fs-shimmed` | 16 | Core sources with native filesystem includes or calls covered by WASM shims. |
 
-Required replacement examples:
+Required replacement set:
 
-- `src/emc/tooldata/tooldata_mmap.cc -> core/wasm_shims/tooldata/tooldata_mmap_backend.cc`
+- `src/emc/rs274ngc/canonmodule.cc -> core/wasm_shims/linuxcnc_runtime_shim.cc`
 - `src/emc/rs274ngc/gcodemodule.cc -> core/wasm_shims/linuxcnc_runtime_shim.cc`
+- `src/emc/rs274ngc/interpmodule.cc -> core/wasm_shims/linuxcnc_runtime_shim.cc`
+- `src/emc/rs274ngc/pyarrays.cc -> core/wasm_shims/python_c_api_shim.cc`
+- `src/emc/rs274ngc/pyblock.cc -> core/wasm_shims/python_c_api_shim.cc`
+- `src/emc/rs274ngc/pyemctypes.cc -> core/wasm_shims/python_c_api_shim.cc`
+- `src/emc/rs274ngc/pyinterp1.cc -> core/wasm_shims/python_c_api_shim.cc`
 - `src/emc/rs274ngc/pyparamclass.cc -> core/wasm_shims/python_c_api_shim.cc`
+- `src/emc/tooldata/tooldata_mmap.cc -> core/wasm_shims/tooldata/tooldata_mmap_backend.cc`
 
 Required tracked core examples: