diff --git a/libcxx/docs/Contributing.rst b/libcxx/docs/Contributing.rst
--- a/libcxx/docs/Contributing.rst
+++ b/libcxx/docs/Contributing.rst
@@ -66,9 +66,10 @@
 
 After branching for an LLVM release:
 
-1. Update ``_LIBCPP_VERSION`` in ``include/__config``
-2. Update the ``include/__libcpp_version`` file
-3. Update the version number in ``docs/conf.py``
+1. Update ``_LIBCPP_VERSION`` in ``libcxx/include/__config``
+2. Update the ``libcxx/include/__libcpp_version`` file
+3. Update the version number in ``libcxx/docs/conf.py``
+4. Update ``_LIBCPPABI_VERSION`` in ``libcxxabi/include/cxxabi.h``
 
 Exporting new symbols from the library
 ======================================
diff --git a/libcxxabi/include/cxxabi.h b/libcxxabi/include/cxxabi.h
--- a/libcxxabi/include/cxxabi.h
+++ b/libcxxabi/include/cxxabi.h
@@ -19,7 +19,7 @@
 
 #include <__cxxabi_config.h>
 
-#define _LIBCPPABI_VERSION 1002
+#define _LIBCPPABI_VERSION 15000
 #define _LIBCXXABI_NORETURN  __attribute__((noreturn))
 #define _LIBCXXABI_ALWAYS_COLD __attribute__((cold))