diff --git a/expat/CMakeLists.txt b/expat/CMakeLists.txt
index 23a8bb0f..68121fb8 100644
--- a/expat/CMakeLists.txt
+++ b/expat/CMakeLists.txt
@@ -408,7 +408,7 @@ if(EXPAT_WITH_LIBBSD)
 endif()
 
 set(LIBCURRENT 9)   # sync
-set(LIBREVISION 4)  # with
+set(LIBREVISION 5)  # with
 set(LIBAGE 8)       # configure.ac!
 math(EXPR LIBCURRENT_MINUS_AGE "${LIBCURRENT} - ${LIBAGE}")
 
diff --git a/expat/Changes b/expat/Changes
index 4b951a07..5f58cfae 100644
--- a/expat/Changes
+++ b/expat/Changes
@@ -34,6 +34,10 @@ Release X.X.X XXX XXXXXXX XX XXXX
                     Expected impact is denial of service or potentially
                     arbitrary code execution.
 
+        Other changes:
+       #557 #564  Version info bumped from 9:4:8 to 9:5:8;
+                    see https://verbump.de/ for what these numbers do
+
         Special thanks to:
             Ivan Fratric
             Samanta Navarro
diff --git a/expat/configure.ac b/expat/configure.ac
index a6573e81..2ccab028 100644
--- a/expat/configure.ac
+++ b/expat/configure.ac
@@ -82,7 +82,7 @@ dnl If the API changes incompatibly set LIBAGE back to 0
 dnl
 
 LIBCURRENT=9   # sync
-LIBREVISION=4  # with
+LIBREVISION=5  # with
 LIBAGE=8       # CMakeLists.txt!
 
 AC_CONFIG_HEADERS([expat_config.h])