diff --git a/CMakeLists.txt b/CMakeLists.txt
index 8d65db1f7..7bfe3ce76 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -260,7 +260,7 @@ PUBLIC  # these are included from the installed headers
     Qt5::Widgets
 )
 
-set_target_properties(okularcore PROPERTIES VERSION 8.0.0 SOVERSION 8 OUTPUT_NAME Okular5Core EXPORT_NAME Core)
+set_target_properties(okularcore PROPERTIES VERSION 9.0.0 SOVERSION 9 OUTPUT_NAME Okular5Core EXPORT_NAME Core)
 
 install(TARGETS okularcore EXPORT Okular5Targets ${KDE_INSTALL_TARGETS_DEFAULT_ARGS})