diff --git a/rclrust-msg-gen/src/parser.rs b/rclrust-msg-gen/src/parser/mod.rs
similarity index 100%
rename from rclrust-msg-gen/src/parser.rs
rename to rclrust-msg-gen/src/parser/mod.rs
diff --git a/rclrust-msg-gen/src/types.rs b/rclrust-msg-gen/src/types/mod.rs
similarity index 100%
rename from rclrust-msg-gen/src/types.rs
rename to rclrust-msg-gen/src/types/mod.rs
diff --git a/rclrust-msg/src/_core.rs b/rclrust-msg/src/_core/mod.rs
similarity index 100%
rename from rclrust-msg/src/_core.rs
rename to rclrust-msg/src/_core/mod.rs
diff --git a/rclrust/src/internal.rs b/rclrust/src/internal/mod.rs
similarity index 100%
rename from rclrust/src/internal.rs
rename to rclrust/src/internal/mod.rs