diff --git a/esphome/core/helpers.h b/esphome/core/helpers.h
index 04cac5072f..b05cc11029 100644
--- a/esphome/core/helpers.h
+++ b/esphome/core/helpers.h
@@ -115,6 +115,9 @@ template<typename T, size_t N> class StaticVector {
 
   size_t size() const { return count_; }
 
+  T &operator[](size_t i) { return data_[i]; }
+  const T &operator[](size_t i) const { return data_[i]; }
+
   // For range-based for loops
   iterator begin() { return data_.begin(); }
   iterator end() { return data_.begin() + count_; }