diff --git a/README.md b/README.md
index 07f0a973..eab564fd 100644
--- a/README.md
+++ b/README.md
@@ -1,4 +1,4 @@
-# th2 common library (Java) (5.4.2)
+# th2 common library (Java) (5.6.0)
 
 ## Usage
 
@@ -491,6 +491,11 @@ dependencies {
 
 ## Release notes
 
+### 5.6.0-dev
+
+#### Added:
++ New methods for transport message builders which allows checking whether the field is set or not
+
 ### 5.5.0-dev
 
 #### Changed:
diff --git a/gradle.properties b/gradle.properties
index 2eae5e59..5962a2f7 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -13,7 +13,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 #
-release_version=5.5.0
+release_version=5.6.0
 description='th2 common library (Java)'
 vcs_url=https://github.com/th2-net/th2-common-j
 kapt.include.compile.classpath=false