diff --git a/qalculate-gtk-3.15.0.tar.gz b/qalculate-gtk-3.15.0.tar.gz
deleted file mode 100644
index 43df8dd..0000000
--- a/qalculate-gtk-3.15.0.tar.gz
+++ /dev/null
@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:a3c9085c054b32c24a823b5a16f9a210581bddf8814e59588031fa1453aacc72
-size 4583486
diff --git a/qalculate-gtk-3.18.0.tar.gz b/qalculate-gtk-3.18.0.tar.gz
new file mode 100644
index 0000000..93d11c8
--- /dev/null
+++ b/qalculate-gtk-3.18.0.tar.gz
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:173291874ff5b5e6d4408d433344c9ff6f67e06a0dec05a19f0493877153a161
+size 3775082
diff --git a/qalculate-gtk.changes b/qalculate-gtk.changes
index a80f59c..65e38d2 100644
--- a/qalculate-gtk.changes
+++ b/qalculate-gtk.changes
@@ -1,3 +1,21 @@
+-------------------------------------------------------------------
+Tue Apr  6 14:05:53 UTC 2021 - Paolo Stivanin <info@paolostivanin.com>
+
+- Update to 3.18.0:
+  * Save chain mode setting (GUI)
+  * Handle SIGTERM signal (GUI)
+  * System tray improvements (GUI)
+  * Add convert to mixed units to result context menu (GUI)
+  * Redesigned expression, status, and result widgets (GUI)
+  * Chain mode (GUI) and syntax (e.g. 1+2*3=(1+2)*3=6)
+  * Configurable calculate-as-you-type add to history delay (GUI)
+  * Option to use a system tray icon (hides the application when
+    the main window is closed) on Windows (GUI)
+  * Improved completion (GUI)
+  * Support for qalc commands in GUI (expression is interpreted
+    as command if it begins with '/')
+  * Use arrow instead of "to" by default (GUI)
+
 -------------------------------------------------------------------
 Thu Dec 10 07:38:05 UTC 2020 - Paolo Stivanin <info@paolostivanin.com>
 
diff --git a/qalculate-gtk.spec b/qalculate-gtk.spec
index a6a54d3..e528db8 100644
--- a/qalculate-gtk.spec
+++ b/qalculate-gtk.spec
@@ -1,7 +1,7 @@
 #
 # spec file for package qalculate-gtk
 #
-# Copyright (c) 2020 SUSE LLC
+# Copyright (c) 2021 SUSE LLC
 #
 # All modifications and additions to the file contributed by third parties
 # remain the property of their copyright owners, unless otherwise agreed
@@ -17,7 +17,7 @@
 
 
 Name:           qalculate-gtk
-Version:        3.15.0
+Version:        3.18.0
 Release:        0
 Summary:        Multi-purpose cross-platform desktop calculator
 License:        GPL-2.0-or-later
@@ -27,12 +27,13 @@ Source0:        https://github.com/Qalculate/%{name}/archive/v%{version}.tar.gz#
 BuildRequires:  automake
 BuildRequires:  c++_compiler
 BuildRequires:  intltool
+BuildRequires:  libnghttp2-devel
 BuildRequires:  libtool
 BuildRequires:  pkgconfig
 BuildRequires:  pkgconfig(gdk-pixbuf-2.0)
 BuildRequires:  pkgconfig(glib-2.0) >= 2.4
 BuildRequires:  pkgconfig(gtk+-3.0) >= 3.12
-BuildRequires:  pkgconfig(libqalculate) >= 3.8.0
+BuildRequires:  pkgconfig(libqalculate) >= 3.18.0
 BuildRequires:  pkgconfig(libxml-2.0)
 
 %description