diff --git a/Makefile.in b/Makefile.in
index dcdc704c..83cd9727 100644
--- a/Makefile.in
+++ b/Makefile.in
@@ -59,7 +59,8 @@ REPMGRD_OBJS = repmgrd.o repmgrd-physical.o repmgrd-bdr.o configfile.o log.o dbu
 DATE=$(shell date "+%Y-%m-%d")
 
 repmgr_version.h: repmgr_version.h.in
-	$(SED) '0,/REPMGR_VERSION_DATE/s,\(REPMGR_VERSION_DATE\).*,\1 "$(DATE)",' $< >$@
+	$(SED) '0,/REPMGR_VERSION_DATE/s,\(REPMGR_VERSION_DATE\).*,\1 "$(DATE)",' $< >$@; \
+	$(SED) '0,/PG_ACTUAL_VERSION_NUM/s,\(PG_ACTUAL_VERSION_NUM\).*,\1 $(VERSION_NUM),' $< >$@
 
 $(REPMGR_CLIENT_OBJS): repmgr-client.h repmgr_version.h
 
diff --git a/repmgr_version.h.in b/repmgr_version.h.in
index bc362167..6803f429 100644
--- a/repmgr_version.h.in
+++ b/repmgr_version.h.in
@@ -2,3 +2,4 @@
 #define REPMGR_VERSION "4.5dev"
 #define REPMGR_VERSION_NUM 40500
 #define REPMGR_RELEASE_DATE "2019-XX-XX"
+#define PG_ACTUAL_VERSION_NUM