diff --git a/CMakeLists.txt b/CMakeLists.txt
index b584c9286..1e61c300b 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -66,6 +66,10 @@ set (PACKAGE_BUGREPORT https://github.com/BYVoid/OpenCC/issues)
 list(APPEND CMAKE_MODULE_PATH "${PROJECT_SOURCE_DIR}/cmake")
 include(GitVersion)
 
+# C++ interface/layout changes after 1.3.1 require downstream C++ consumers
+# such as librime to relink instead of loading an ABI-incompatible libopencc.
+set (OPENCC_ABI_VERSION 1.4)
+
 set(CPACK_SOURCE_PACKAGE_FILE_NAME
   "${PACKAGE_NAME}-${OPENCC_VERSION_MAJOR}.${OPENCC_VERSION_MINOR}.${OPENCC_VERSION_REVISION}"
 )
diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index 632e725d4..603aa808f 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -171,7 +171,7 @@ set_target_properties(
     VERSION
       ${OPENCC_VERSION_MAJOR}.${OPENCC_VERSION_MINOR}.${OPENCC_VERSION_REVISION}
     SOVERSION
-      ${OPENCC_VERSION_MAJOR}.${OPENCC_VERSION_MINOR}
+      ${OPENCC_ABI_VERSION}
 )
 
 # Installation