diff --git a/srcpkgs/tmux/template b/srcpkgs/tmux/template
index 1ce5268f297..3810abeab3a 100644
--- a/srcpkgs/tmux/template
+++ b/srcpkgs/tmux/template
@@ -1,6 +1,6 @@
 # Template file for 'tmux'
 pkgname=tmux
-version=3.5
+version=3.5a
 revision=1
 build_style=gnu-configure
 configure_args="--enable-utempter --enable-sixel"
@@ -13,7 +13,7 @@ license="ISC"
 homepage="https://tmux.github.io"
 changelog="https://raw.githubusercontent.com/tmux/tmux/master/CHANGES"
 distfiles="https://github.com/tmux/tmux/releases/download/${version}/tmux-${version}.tar.gz"
-checksum=2fe01942e7e7d93f524a22f2c883822c06bc258a4d61dba4b407353d7081950f
+checksum=16216bd0877170dfcc64157085ba9013610b12b082548c7c9542cc0103198951
 
 pre_configure() {
 	autoreconf -fi
diff --git a/srcpkgs/tmux/update b/srcpkgs/tmux/update
index 65c9b659b39..f2e185f58e1 100644
--- a/srcpkgs/tmux/update
+++ b/srcpkgs/tmux/update
@@ -1 +1,2 @@
-site="https://github.com/tmux/tmux/releases"
+#site="https://github.com/tmux/tmux/releases"
+pattern="(?<=refs/tags/)[0-9.]+[a-z]*(?=.tar)"