Index: thirdparty/Spice/CMakeLists.txt
--- thirdparty/Spice/CMakeLists.txt.orig
+++ thirdparty/Spice/CMakeLists.txt
@@ -47,6 +47,7 @@ else ()
 endif ()
 set_target_properties(spice PROPERTIES POSITION_INDEPENDENT_CODE 1)
 set_target_properties(spice PROPERTIES C_STANDARD 90)
+set_target_properties(spice PROPERTIES SOVERSION ${LIBspice_VERSION})
 target_include_directories(spice PUBLIC "${INCLUDE_PATH}")
 
 if (WIN32)
