diff --git a/CMakeLists.txt b/CMakeLists.txt
index 25faa3e5..e8e23be0 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -81,7 +81,7 @@ endif()
 # The version number.
 set (iqtree_VERSION_MAJOR 1)
 set (iqtree_VERSION_MINOR 7)
-set (iqtree_VERSION_PATCH "-beta12")
+set (iqtree_VERSION_PATCH "-beta13")
 
 option(BUILD_SHARED_LIBS "Build Shared Libraries" OFF)