diff --git a/library.json b/library.json
index c221c43..bb87afd 100644
--- a/library.json
+++ b/library.json
@@ -11,7 +11,7 @@
         "url": "https://github.com/m5stack/M5Unit-RTC.git"
     },
     "dependencies": {
-        "m5stack/M5UnitUnified": ">=0.4.0"
+        "m5stack/M5UnitUnified": ">=0.4.1"
     },
     "version": "0.1.0",
     "frameworks": [
diff --git a/platformio.ini b/platformio.ini
index 967b360..74ca1c9 100644
--- a/platformio.ini
+++ b/platformio.ini
@@ -10,7 +10,7 @@ lib_ldf_mode = deep
 test_framework = googletest
 test_build_src = true
 lib_deps=m5stack/M5Unified
-  m5stack/M5UnitUnified@>=0.4.0
+  m5stack/M5UnitUnified@>=0.4.1
 
 [m5base]
 monitor_speed = 115200
@@ -199,7 +199,7 @@ build_flags = ${env.build_flags}
   -DM5_LOG_LEVEL=0
   -Wl,-Map,output.map
 
-; Require at leaset C++14 after 1.13.0
+; Require at least C++14 after 1.13.0
 [test_fw]
 lib_deps = google/googletest@1.12.1