diff --git a/esphome/components/esp32/__init__.py b/esphome/components/esp32/__init__.py
index a2068020a3..bf96550ab6 100644
--- a/esphome/components/esp32/__init__.py
+++ b/esphome/components/esp32/__init__.py
@@ -391,6 +391,9 @@ ARDUINO_PLATFORM_VERSION_LOOKUP = {
     cv.Version(3, 1, 1): cv.Version(53, 3, 11),
     cv.Version(3, 1, 0): cv.Version(53, 3, 10),
 }
+# Maps Arduino framework versions to a compatible ESP-IDF version
+# These versions correspond to pioarduino/esp-idf releases
+# See: https://github.com/pioarduino/esp-idf/releases
 ARDUINO_IDF_VERSION_LOOKUP = {
     cv.Version(3, 3, 5): cv.Version(5, 5, 2),
     cv.Version(3, 3, 4): cv.Version(5, 5, 1),