diff --git a/srcpkgs/tmux/patches/REG_STARTEND.patch b/srcpkgs/tmux/patches/REG_STARTEND.patch
deleted file mode 100644
index 7cfddc2f38b..00000000000
--- a/srcpkgs/tmux/patches/REG_STARTEND.patch
+++ /dev/null
@@ -1,60 +0,0 @@
-From eb4d60b1ce0e2dc917bd47b10a3ce89de840448a Mon Sep 17 00:00:00 2001
-From: nicm <nicm>
-Date: Wed, 27 Nov 2019 20:54:30 +0000
-Subject: [PATCH] REG_STARTEND is not portable, but it turns out we don't
- actually need it. From Evan Green, GitHub issue 1982.
-
----
- regsub.c | 24 ++++++++++++------------
- 1 file changed, 12 insertions(+), 12 deletions(-)
-
-diff --git regsub.c regsub.c
-index 199b21714..22e236dc7 100644
---- regsub.c
-+++ regsub.c
-@@ -77,10 +77,7 @@ regsub(const char *pattern, const char *with, const char *text, int flags)
- 	end = strlen(text);
- 
- 	while (start <= end) {
--		m[0].rm_so = start;
--		m[0].rm_eo = end;
--
--		if (regexec(&r, text, nitems(m), m, REG_STARTEND) != 0) {
-+		if (regexec(&r, text + start, nitems(m), m, 0) != 0) {
- 			regsub_copy(&buf, &len, text, start, end);
- 			break;
- 		}
-@@ -89,22 +86,25 @@ regsub(const char *pattern, const char *with, const char *text, int flags)
- 		 * Append any text not part of this match (from the end of the
- 		 * last match).
- 		 */
--		regsub_copy(&buf, &len, text, last, m[0].rm_so);
-+		regsub_copy(&buf, &len, text, last, m[0].rm_so + start);
- 
- 		/*
- 		 * If the last match was empty and this one isn't (it is either
- 		 * later or has matched text), expand this match. If it is
- 		 * empty, move on one character and try again from there.
- 		 */
--		if (empty || m[0].rm_so != last || m[0].rm_so != m[0].rm_eo) {
--			regsub_expand(&buf, &len, with, text, m, nitems(m));
--
--			last = m[0].rm_eo;
--			start = m[0].rm_eo;
-+		if (empty ||
-+		    start + m[0].rm_so != last ||
-+		    m[0].rm_so != m[0].rm_eo) {
-+			regsub_expand(&buf, &len, with, text + start, m,
-+			    nitems(m));
-+
-+			last = start + m[0].rm_eo;
-+			start += m[0].rm_eo;
- 			empty = 0;
- 		} else {
--			last = m[0].rm_eo;
--			start = m[0].rm_eo + 1;
-+			last = start + m[0].rm_eo;
-+			start += m[0].rm_eo + 1;
- 			empty = 1;
- 		}
- 
diff --git a/srcpkgs/tmux/template b/srcpkgs/tmux/template
index e17fe7d7ec0..159b3cfa90a 100644
--- a/srcpkgs/tmux/template
+++ b/srcpkgs/tmux/template
@@ -1,6 +1,6 @@
 # Template file for 'tmux'
 pkgname=tmux
-version=3.0
+version=3.0a
 revision=1
 build_style=gnu-configure
 makedepends="libevent-devel ncurses-devel"
@@ -10,7 +10,7 @@ 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=9edcd78df80962ee2e6471a8f647602be5ded62bb41c574172bb3dc3d0b9b4b4
+checksum=4ad1df28b4afa969e59c08061b45082fdc49ff512f30fc8e43217d7b0e5f8db9
 
 post_install() {
 	vlicense COPYING