diff --git a/.vscode/settings.json b/.vscode/settings.json
index 09e36b5..d3a31bb 100644
--- a/.vscode/settings.json
+++ b/.vscode/settings.json
@@ -16,6 +16,8 @@
   "files.trimFinalNewlines": true,
   "files.associations": {
     "*.inc": "c",
+    "*.pch": "c",
+    "*.pch++": "cpp",
     ".clangd": "yaml"
   },
   // Disable C/C++ IntelliSense, use clangd instead
diff --git a/tools/project.py b/tools/project.py
index 2d00df4..00d414e 100644
--- a/tools/project.py
+++ b/tools/project.py
@@ -1545,13 +1545,20 @@ def generate_objdiff_config(
         "build_target": False,
         "watch_patterns": [
             "*.c",
+            "*.cc",
             "*.cp",
             "*.cpp",
+            "*.cxx",
+            "*.c++",
             "*.h",
+            "*.hh",
+            "*.hp",
             "*.hpp",
-            "*.inc",
+            "*.hxx",
+            "*.h++",
             "*.pch",
             "*.pch++",
+            "*.inc",
             "*.py",
             "*.yml",
             "*.txt",