diff --git a/esphome/components/version/version_text_sensor.cpp b/esphome/components/version/version_text_sensor.cpp
index f03c91e5f5..67611e55a5 100644
--- a/esphome/components/version/version_text_sensor.cpp
+++ b/esphome/components/version/version_text_sensor.cpp
@@ -10,14 +10,28 @@ namespace version {
 static const char *const TAG = "version.text_sensor";
 
 void VersionTextSensor::setup() {
-  if (this->hide_timestamp_) {
-    this->publish_state(str_sprintf(ESPHOME_VERSION " (config hash 0x%08" PRIx32 ")", App.get_config_hash()));
-  } else {
+  static const char prefix[] PROGMEM = ESPHOME_VERSION " (config hash 0x";
+  char version_str[128];
+
+#ifdef USE_ESP8266
+  strcpy_P(version_str, prefix);
+#else
+  strcpy(version_str, prefix);
+#endif
+
+  char hash_str[9];
+  snprintf(hash_str, sizeof(hash_str), "%08" PRIx32, App.get_config_hash());
+  strcat(version_str, hash_str);
+
+  if (!this->hide_timestamp_) {
+    strcat(version_str, ", built: ");
     char build_time_str[esphome::Application::BUILD_TIME_STR_SIZE];
     App.get_build_time_string(build_time_str);
-    this->publish_state(str_sprintf(ESPHOME_VERSION " (config hash 0x%08" PRIx32 ", built: %s)", App.get_config_hash(),
-                                    build_time_str));
+    strcat(version_str, build_time_str);
   }
+
+  strcat(version_str, ")");
+  this->publish_state(version_str);
 }
 float VersionTextSensor::get_setup_priority() const { return setup_priority::DATA; }
 void VersionTextSensor::set_hide_timestamp(bool hide_timestamp) { this->hide_timestamp_ = hide_timestamp; }