diff --git a/CHANGELOG.md b/CHANGELOG.md
index 5f7a475..c338cc1 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -3,6 +3,17 @@ All notable changes to this project will be documented in this file.
 
 ## Unreleased 
 
+## [1.1.11] - 2023-03-26
+### Fixed
+- Fix ``@Nullable`` in Utils class
+
+## [1.1.10] - 2023-03-25
+### Changed
+- Updated source headers to year 2023
+### Fixed
+- Fixed several SonarCube issues
+- Update Maven dependencies
+
 ## [1.1.9] - 2023-03-20
 ### Fixed
 - Remove escaping (0xAA and 0xA) master data bytes and master CRC on function ``EBusCommandUtils.buildPartMasterTelegram``
diff --git a/pom.xml b/pom.xml
index 1095d7e..9747783 100644
--- a/pom.xml
+++ b/pom.xml
@@ -7,7 +7,7 @@
 	<description>eBUS core library - This library handles the communication with heating engineering via the BUS specification. This protocol is used by many heating manufacturers in Europe.</description>
 	<groupId>de.cs-dev.ebus</groupId>
 	<artifactId>ebus-core</artifactId>
-	<version>1.1.10</version>
+	<version>1.1.11</version>
 	<url>https://github.com/csowada/ebus</url>
 	<packaging>bundle</packaging>
 
diff --git a/src/main/java/de/csdev/ebus/utils/EBusUtils.java b/src/main/java/de/csdev/ebus/utils/EBusUtils.java
index db45306..896d293 100644
--- a/src/main/java/de/csdev/ebus/utils/EBusUtils.java
+++ b/src/main/java/de/csdev/ebus/utils/EBusUtils.java
@@ -240,7 +240,7 @@ public static boolean isValidAddress(final byte address) {
      * @param hexDumpString
      * @return
      */
-    public static @Nullable Byte toByte(final String hexDumpString) {
+    public static @Nullable Byte toByte(final @Nullable String hexDumpString) {
         if (StringUtils.isEmpty(hexDumpString)) {
             return null;
         }