diff --git a/doc/cadet.doxyfile b/doc/cadet.doxyfile
index 8955f0775..a43253b53 100644
--- a/doc/cadet.doxyfile
+++ b/doc/cadet.doxyfile
@@ -38,7 +38,7 @@ PROJECT_NAME           = "CADET"
 # could be handy for archiving the generated documentation or if some version
 # control system is used.
 
-PROJECT_NUMBER         = 4.3.0
+PROJECT_NUMBER         = 4.4.0
 
 # Using the PROJECT_BRIEF tag one can provide an optional one line description
 # for a project that appears at the top of each page and should give viewer a
diff --git a/include/cadet/cadet.hpp b/include/cadet/cadet.hpp
index 9da2a64cd..899d11540 100644
--- a/include/cadet/cadet.hpp
+++ b/include/cadet/cadet.hpp
@@ -15,8 +15,8 @@
  * The library provides a fast and accurate forward simulator for the general rate model of column liquid chromatography
  * 
  * @authors    Eric von Lieres, Joel Andersson, Andreas Puettmann, Sebastian Schnittert, Samuel Leweke, William Heymann
- * @version    4.3.0
- * @date       2008-2022
+ * @version    4.4.0
+ * @date       2008-2023
  * @copyright  GNU General Public License v3.0 (or, at your option, any later version).
  */
 
diff --git a/version.txt b/version.txt
index 80895903a..fdc669880 100644
--- a/version.txt
+++ b/version.txt
@@ -1 +1 @@
-4.3.0
+4.4.0