diff --git a/expat/CMakeLists.txt b/expat/CMakeLists.txt
index 679290d6..ef041a18 100644
--- a/expat/CMakeLists.txt
+++ b/expat/CMakeLists.txt
@@ -76,7 +76,7 @@ endif(BUILD_shared)
 add_library(expat ${_SHARED} ${expat_SRCS})
 
 set(LIBCURRENT 7)   # sync
-set(LIBREVISION 3)  # with
+set(LIBREVISION 4)  # with
 set(LIBAGE 6)       # configure.ac!
 math(EXPR LIBCURRENT_MINUS_AGE "${LIBCURRENT} - ${LIBAGE}")
 
diff --git a/expat/configure.ac b/expat/configure.ac
index 876a09ee..7d1fd037 100644
--- a/expat/configure.ac
+++ b/expat/configure.ac
@@ -46,7 +46,7 @@ dnl If the API changes incompatibly set LIBAGE back to 0
 dnl
 
 LIBCURRENT=7   # sync
-LIBREVISION=3  # with
+LIBREVISION=4  # with
 LIBAGE=6       # CMakeLists.txt!
 
 AC_CONFIG_HEADER(expat_config.h)