diff --git a/bin/xbps-repo/index.c b/bin/xbps-repo/index.c
index 3a8cc45dcaa..fc277aca7d9 100644
--- a/bin/xbps-repo/index.c
+++ b/bin/xbps-repo/index.c
@@ -69,7 +69,7 @@ repoidx_getdict(const char *pkgdir)
 		prop_dictionary_set_cstring_nocopy(dict,
 		    "location-local", pkgdir);
 		prop_dictionary_set_cstring_nocopy(dict,
-		    "pkgindex-version", "1.0");
+		    "pkgindex-version", XBPS_PKGINDEX_VERSION);
 	}
 	free(plist);
 
diff --git a/include/xbps_api.h b/include/xbps_api.h
index c032970aa65..75250c67945 100644
--- a/include/xbps_api.h
+++ b/include/xbps_api.h
@@ -51,6 +51,9 @@
 #define XBPS_PKGPROPS		"props.plist"
 #define XBPS_PKGFILES		"files.plist"
 
+/* Current version of the package index format. */
+#define XBPS_PKGINDEX_VERSION	"1.0"
+
 /* Verbose messages */
 #define XBPS_VERBOSE		0x00000001