diff --git a/lib/default/TasmotaSerial-3.3.0/README.md b/lib/default/TasmotaSerial-3.4.0/README.md
similarity index 100%
rename from lib/default/TasmotaSerial-3.3.0/README.md
rename to lib/default/TasmotaSerial-3.4.0/README.md
diff --git a/lib/default/TasmotaSerial-3.3.0/examples/swsertest/swsertest.ino b/lib/default/TasmotaSerial-3.4.0/examples/swsertest/swsertest.ino
similarity index 100%
rename from lib/default/TasmotaSerial-3.3.0/examples/swsertest/swsertest.ino
rename to lib/default/TasmotaSerial-3.4.0/examples/swsertest/swsertest.ino
diff --git a/lib/default/TasmotaSerial-3.3.0/keywords.txt b/lib/default/TasmotaSerial-3.4.0/keywords.txt
similarity index 100%
rename from lib/default/TasmotaSerial-3.3.0/keywords.txt
rename to lib/default/TasmotaSerial-3.4.0/keywords.txt
diff --git a/lib/default/TasmotaSerial-3.3.0/library.json b/lib/default/TasmotaSerial-3.4.0/library.json
similarity index 94%
rename from lib/default/TasmotaSerial-3.3.0/library.json
rename to lib/default/TasmotaSerial-3.4.0/library.json
index f6d1aaaeb..e9e2294fb 100644
--- a/lib/default/TasmotaSerial-3.3.0/library.json
+++ b/lib/default/TasmotaSerial-3.4.0/library.json
@@ -1,6 +1,6 @@
 {
     "name": "TasmotaSerial",
-    "version": "3.3.0",
+    "version": "3.4.0",
     "keywords": [
       "serial", "io", "TasmotaSerial"
     ],
diff --git a/lib/default/TasmotaSerial-3.3.0/library.properties b/lib/default/TasmotaSerial-3.4.0/library.properties
similarity index 94%
rename from lib/default/TasmotaSerial-3.3.0/library.properties
rename to lib/default/TasmotaSerial-3.4.0/library.properties
index 6b43764a6..d254a7355 100644
--- a/lib/default/TasmotaSerial-3.3.0/library.properties
+++ b/lib/default/TasmotaSerial-3.4.0/library.properties
@@ -1,5 +1,5 @@
 name=TasmotaSerial
-version=3.3.0
+version=3.4.0
 author=Theo Arends
 maintainer=Theo Arends <theo@arends.com>
 sentence=Implementation of software serial with hardware serial fallback for ESP8266 and ESP32.
diff --git a/lib/default/TasmotaSerial-3.3.0/src/TasmotaSerial.cpp b/lib/default/TasmotaSerial-3.4.0/src/TasmotaSerial.cpp
similarity index 100%
rename from lib/default/TasmotaSerial-3.3.0/src/TasmotaSerial.cpp
rename to lib/default/TasmotaSerial-3.4.0/src/TasmotaSerial.cpp
diff --git a/lib/default/TasmotaSerial-3.3.0/src/TasmotaSerial.h b/lib/default/TasmotaSerial-3.4.0/src/TasmotaSerial.h
similarity index 100%
rename from lib/default/TasmotaSerial-3.3.0/src/TasmotaSerial.h
rename to lib/default/TasmotaSerial-3.4.0/src/TasmotaSerial.h