diff --git a/CMakeLists.txt b/CMakeLists.txt
index 514b435..0525072 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,5 +1,6 @@
 set(CNAME "libsimdb")
-set(VERSION 0.3)
+set(VERSION 0.4)
+set(SOVERSION 1)
 
 project($CNAME C)
 cmake_minimum_required(VERSION 2.6)
diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index 48619eb..cb1cbc9 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -1,7 +1,7 @@
 set(LIB_SOURCES "database.c" "bitmap.c" "samplers/${SAMPLER}.c")
 
 add_library("simdb" SHARED ${LIB_SOURCES})
-set_property(TARGET "simdb" PROPERTY SONAME ${VERSION})
+set_property(TARGET "simdb" PROPERTY SOVERSION ${SOVERSION})
 
 if (${SAMPLER} STREQUAL "magick")
   find_package(ImageMagick COMPONENTS MagickCore MagickWand)