diff --git a/include/zh_avr_pcf8574.h b/include/zh_avr_pcf8574.h
index bfe2941..11ca4f7 100644
--- a/include/zh_avr_pcf8574.h
+++ b/include/zh_avr_pcf8574.h
@@ -33,7 +33,7 @@ extern "C"
     typedef struct // Structure for initial initialization of PCF8574 expander.
     {
         uint8_t task_priority;  // Task priority for the PCF8574 expander isr processing. @note It is not recommended to set a value less than configMAX_PRIORITIES.
-        uint8_t stack_size;     // Stack size for task for the PCF8574 expander isr processing processing. @note The minimum size is 124 byte.
+        uint8_t stack_size;     // Stack size for task for the PCF8574 expander isr processing processing.
         uint8_t i2c_address;    // Expander I2C address.
         bool p0_gpio_work_mode; // Expander GPIO PO work mode. True for input, false for output.
         bool p1_gpio_work_mode; // Expander GPIO P1 work mode. True for input, false for output.
diff --git a/version.txt b/version.txt
index 589268e..6261a05 100644
--- a/version.txt
+++ b/version.txt
@@ -1 +1 @@
-1.3.0
\ No newline at end of file
+1.3.1
\ No newline at end of file
diff --git a/zh_avr_pcf8574.c b/zh_avr_pcf8574.c
index 5d46713..b0c29f9 100644
--- a/zh_avr_pcf8574.c
+++ b/zh_avr_pcf8574.c
@@ -82,7 +82,7 @@ static avr_err_t _zh_avr_pcf8574_validate_config(const zh_avr_pcf8574_init_confi
 {
     ZH_ERROR_CHECK(config != NULL, AVR_ERR_INVALID_ARG);
     ZH_ERROR_CHECK((config->i2c_address >= 0x20 && config->i2c_address <= 0x27) || (config->i2c_address >= 0x38 && config->i2c_address <= 0x3F), AVR_ERR_INVALID_ARG);
-    ZH_ERROR_CHECK(config->task_priority > tskIDLE_PRIORITY && config->stack_size >= 124, AVR_ERR_INVALID_ARG);
+    ZH_ERROR_CHECK(config->task_priority > tskIDLE_PRIORITY && config->stack_size >= configMINIMAL_STACK_SIZE, AVR_ERR_INVALID_ARG);
     ZH_ERROR_CHECK(config->interrupt_gpio == 0xFF || (config->interrupt_gpio >= 0 && config->interrupt_gpio <= 7), AVR_ERR_INVALID_ARG);
     if (config->interrupt_gpio != 0xFF)
     {