diff --git a/flex/PKGBUILD b/flex/PKGBUILD
index e9ed5d472a..b0e0065aaa 100644
--- a/flex/PKGBUILD
+++ b/flex/PKGBUILD
@@ -5,7 +5,7 @@
 
 pkgname=flex
 pkgver=2.6.4
-pkgrel=5
+pkgrel=5.1
 pkgdesc="A tool for generating text-scanning programs"
 arch=(x86_64 powerpc64le powerpc64 powerpc riscv64)
 url="https://github.com/westes/flex"