diff --git a/esphome/components/api/api_pb2.cpp b/esphome/components/api/api_pb2.cpp
index 9e74d5ddc7..3f23943b12 100644
--- a/esphome/components/api/api_pb2.cpp
+++ b/esphome/components/api/api_pb2.cpp
@@ -1007,10 +1007,6 @@ bool ParsedTimezone::decode_length(uint32_t field_id, ProtoLengthDelimited value
 }
 bool GetTimeResponse::decode_length(uint32_t field_id, ProtoLengthDelimited value) {
   switch (field_id) {
-    case 2: {
-      this->timezone = StringRef(reinterpret_cast<const char *>(value.data()), value.size());
-      break;
-    }
     case 3:
       value.decode_to_message(this->parsed_timezone);
       break;
diff --git a/esphome/components/api/api_pb2.h b/esphome/components/api/api_pb2.h
index 2882868982..050b000450 100644
--- a/esphome/components/api/api_pb2.h
+++ b/esphome/components/api/api_pb2.h
@@ -1154,12 +1154,11 @@ class ParsedTimezone final : public ProtoDecodableMessage {
 class GetTimeResponse final : public ProtoDecodableMessage {
  public:
   static constexpr uint8_t MESSAGE_TYPE = 37;
-  static constexpr uint8_t ESTIMATED_SIZE = 31;
+  static constexpr uint8_t ESTIMATED_SIZE = 22;
 #ifdef HAS_PROTO_MESSAGE_DUMP
   const char *message_name() const override { return "get_time_response"; }
 #endif
   uint32_t epoch_seconds{0};
-  StringRef timezone{};
   ParsedTimezone parsed_timezone{};
 #ifdef HAS_PROTO_MESSAGE_DUMP
   const char *dump_to(DumpBuffer &out) const override;
diff --git a/esphome/components/api/api_pb2_dump.cpp b/esphome/components/api/api_pb2_dump.cpp
index 290e5fe4d2..869892c691 100644
--- a/esphome/components/api/api_pb2_dump.cpp
+++ b/esphome/components/api/api_pb2_dump.cpp
@@ -1291,7 +1291,6 @@ const char *ParsedTimezone::dump_to(DumpBuffer &out) const {
 const char *GetTimeResponse::dump_to(DumpBuffer &out) const {
   MessageDumpHelper helper(out, "GetTimeResponse");
   dump_field(out, "epoch_seconds", this->epoch_seconds);
-  dump_field(out, "timezone", this->timezone);
   out.append("  parsed_timezone: ");
   this->parsed_timezone.dump_to(out);
   out.append("\n");