diff --git a/mkvtoolnix.spec b/mkvtoolnix.spec
index b9a57b8..87f71aa 100644
--- a/mkvtoolnix.spec
+++ b/mkvtoolnix.spec
@@ -1,6 +1,6 @@
 Summary: Matroska container manipulation utilities
 Name: mkvtoolnix
-Version: 83.0
+Version: 84.0
 Release: 1%{?dist}
 License: GPL-2.0-or-later AND LGPL-2.1-or-later
 Source0: https://mkvtoolnix.download/sources/mkvtoolnix-%{version}.tar.xz
@@ -18,7 +18,7 @@ BuildRequires: cmake(Qt6Svg)
 BuildRequires: cmake(Qt6Widgets)
 BuildRequires: desktop-file-utils
 BuildRequires: docbook-style-xsl
-BuildRequires: fmt-devel >= 6.1.0
+BuildRequires: fmt-devel >= 8.0.0
 BuildRequires: gcc-c++
 BuildRequires: gettext
 BuildRequires: gmp-devel
@@ -122,6 +122,10 @@ drake tests:run_unit
 %{_datadir}/mkvtoolnix
 
 %changelog
+* Thu May 09 2024 Dominik Mierzejewski <dominik@greysector.net> - 84.0-1
+- update to 84.0 (#2277593)
+- fmt >= 8.0.0 is required now
+
 * Wed Mar 13 2024 Dominik Mierzejewski <dominik@greysector.net> - 83.0-1
 - update to 83.0 (#2268853)
 
diff --git a/sources b/sources
index f8cd663..31e3714 100644
--- a/sources
+++ b/sources
@@ -1,2 +1,2 @@
-SHA512 (mkvtoolnix-83.0.tar.xz) = e70236249f9f72c4ffeab8222c03cdf373a25643f1b106a1abb695184152be8bb22e3fb5dc67b48e6193d9ac37d0b9b2ea317a31214b92648ac75a82c99f9b5d
-SHA512 (mkvtoolnix-83.0.tar.xz.sig) = 6d3ac46a40139fff67da61c77a802df243764d8c26c55e3b951d407fd3147bcf985f8a62c21b18c12fabe0afdc535a3449a6bfff3f15a5779b2aed1f94fe0ab7
+SHA512 (mkvtoolnix-84.0.tar.xz) = 3a73bb2497a227fd2e0a65d58e72bf479662828a7b4201b37b7bfdd7f88d294a6690aee024661d8b5615036f64a4ce1c2ba64d7b24ebd352f8f5ce3ffdac543a
+SHA512 (mkvtoolnix-84.0.tar.xz.sig) = 2338a226e0df776e1b3c78f93793900e62c391fd7fd4e56c317840f3d00fccc20d6ede3118ad47266b6772459d1959a221f2e475a4b96bd9c2d58caab3dae184