increase core soname
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 221b818..b904690 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -367,7 +367,7 @@
 else(MSVC)
 add_library(poppler SHARED ${poppler_SRCS})
 endif(MSVC)
-set_target_properties(poppler PROPERTIES VERSION 11.0.0 SOVERSION 11)
+set_target_properties(poppler PROPERTIES VERSION 12.0.0 SOVERSION 12)
 target_link_libraries(poppler ${poppler_LIBS})
 target_link_libraries(poppler LINK_INTERFACE_LIBRARIES "")
 install(TARGETS poppler RUNTIME DESTINATION bin LIBRARY DESTINATION lib${LIB_SUFFIX} ARCHIVE DESTINATION lib${LIB_SUFFIX})
diff --git a/poppler/Makefile.am b/poppler/Makefile.am
index ceaca86..2e9ee68 100644
--- a/poppler/Makefile.am
+++ b/poppler/Makefile.am
@@ -176,7 +176,7 @@
 	$(PTHREAD_LIBS)				\
 	$(win32_libs)
 
-libpoppler_la_LDFLAGS = -version-info 11:0:0 @create_shared_lib@ @auto_import_flags@
+libpoppler_la_LDFLAGS = -version-info 12:0:0 @create_shared_lib@ @auto_import_flags@
 
 if ENABLE_XPDF_HEADERS