diff --git a/CMakeLists.txt b/CMakeLists.txt
index 68f2478..95f8ca2 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,7 +1,7 @@
 cmake_minimum_required(VERSION 3.18 FATAL_ERROR)
 project(
   bgen
-  VERSION 4.1.8
+  VERSION 4.1.9
   LANGUAGES C)
 set(PROJECT_DESCRIPTION
     "It fully supports the BGEN format specifications 1.2 and 1.3.")