diff --git a/CMakeLists.txt b/CMakeLists.txt
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -20,7 +20,7 @@
 
 set_package_properties(ECM PROPERTIES TYPE REQUIRED DESCRIPTION "Extra modules and scripts for CMake" URL "git://anongit.kde.org/extra-cmake-modules")
 
-set(PROJECT_VERSION "16.08.0")
+set(PROJECT_VERSION "0.90.0")
 set(KF5_DEP_VERSION "5.24.0") # handled by release scripts
 set(REQUIRED_QT_VERSION 5.4.0)
 
@@ -47,7 +47,7 @@
     VARIABLE_PREFIX ATCORE
     VERSION_HEADER "${CMAKE_CURRENT_BINARY_DIR}/atcore_version.h"
     PACKAGE_VERSION_FILE "${CMAKE_CURRENT_BINARY_DIR}/AtCoreConfigVersion.cmake"
-    SOVERSION 1
+    SOVERSION ${PROJECT_VERSION_MAJOR}
 )
 
 if (IS_DIRECTORY "${CMAKE_CURRENT_SOURCE_DIR}/po")
diff --git a/src/atcore.h b/src/atcore.h
--- a/src/atcore.h
+++ b/src/atcore.h
@@ -52,6 +52,7 @@
 class ATCORE_EXPORT AtCore : public QObject
 {
     Q_OBJECT
+    Q_PROPERTY(QString version READ version)
     Q_PROPERTY(QStringList availableFirmwarePlugins READ availableFirmwarePlugins)
     Q_PROPERTY(quint16 serialTimerInterval READ serialTimerInterval WRITE setSerialTimerInterval)
     Q_PROPERTY(QStringList serialPorts READ serialPorts NOTIFY portsChanged)
@@ -98,6 +99,12 @@
      */
     explicit AtCore(QObject *parent = nullptr);
 
+    /**
+     * @brief version
+     * @return Version number
+     */
+    QString version() const;
+
     /**
      * @brief Returns a List of detected serial ports
      * @return List of detected ports
diff --git a/src/atcore.cpp b/src/atcore.cpp
--- a/src/atcore.cpp
+++ b/src/atcore.cpp
@@ -33,6 +33,7 @@
 #include <QThread>
 
 #include "atcore.h"
+#include "atcore_version.h"
 #include "seriallayer.h"
 #include "gcodecommands.h"
 #include "printthread.h"
@@ -93,6 +94,11 @@
     setState(AtCore::DISCONNECTED);
 }
 
+QString AtCore::version() const
+{
+    return QString::fromLatin1(ATCORE_VERSION_STRING);
+}
+
 SerialLayer *AtCore::serial() const
 {
     return d->serial;
diff --git a/testclient/mainwindow.cpp b/testclient/mainwindow.cpp
--- a/testclient/mainwindow.cpp
+++ b/testclient/mainwindow.cpp
@@ -42,6 +42,7 @@
     logFile(new QTemporaryFile(QDir::tempPath() + QStringLiteral("/AtCore_")))
 {
     ui->setupUi(this);
+    setWindowTitle(QString::fromLatin1("AtCore (%1) - Test Gui").arg(core->version()));
     ui->serialPortCB->setEditable(true);
     QValidator *validator = new QIntValidator();
     ui->baudRateLE->setValidator(validator);