diff --git a/crates/languages/src/cpp/config.toml b/crates/languages/src/cpp/config.toml
index 10c36a6ded1e1f3a1204d1e15af47fee78b8e049..e2608a8ce5f17cb648e4f86dc27da60ed8bdd2ae 100644
--- a/crates/languages/src/cpp/config.toml
+++ b/crates/languages/src/cpp/config.toml
@@ -1,6 +1,6 @@
 name = "C++"
 grammar = "cpp"
-path_suffixes = ["cc", "hh", "cpp", "h", "hpp", "cxx", "hxx", "c++", "h++", "ipp", "inl", "ino", "ixx", "cu", "cuh", "C", "H"]
+path_suffixes = ["cc", "hh", "cpp", "cppm", "h", "hpp", "cxx", "hxx", "c++", "h++", "ipp", "inl", "ino", "ixx", "cu", "cuh", "C", "H"]
 line_comments = ["// ", "/// ", "//! "]
 first_line_pattern = '^//.*-\*-\s*C\+\+\s*-\*-'
 decrease_indent_patterns = [
diff --git a/crates/theme/src/icon_theme.rs b/crates/theme/src/icon_theme.rs
index 7c2d603281ec50c1daa6f21e1dc3487bfc394a67..121ff9d7d4fbd841315b89e631606c7e67bc5cde 100644
--- a/crates/theme/src/icon_theme.rs
+++ b/crates/theme/src/icon_theme.rs
@@ -89,7 +89,7 @@ const FILE_SUFFIXES_BY_ICON_KEY: &[(&str, &[&str])] = &[
     (
         "cpp",
         &[
-            "c++", "h++", "cc", "cpp", "cxx", "hh", "hpp", "hxx", "inl", "ixx",
+            "c++", "h++", "cc", "cpp", "cppm", "cxx", "hh", "hpp", "hxx", "inl", "ixx",
         ],
     ),
     ("crystal", &["cr", "ecr"]),