diff --git a/.gitignore b/.gitignore
index a00b712..31fd6fb 100644
--- a/.gitignore
+++ b/.gitignore
@@ -24,3 +24,4 @@ catfish-0.3.2.tar.gz
 /catfish-4.16.0.tar.bz2
 /catfish-4.16.1.tar.bz2
 /catfish-4.16.2.tar.bz2
+/catfish-4.16.3.tar.bz2
diff --git a/catfish.spec b/catfish.spec
index b5c92f9..13819ec 100644
--- a/catfish.spec
+++ b/catfish.spec
@@ -9,7 +9,7 @@ BuildRequires:  %1 \
 %endif
 
 %global		majorver	4.16
-%define		mainver		4.16.2
+%define		mainver		4.16.3
 %undefine		betaver		
 
 %define		fedoraver	1
@@ -33,14 +33,23 @@ BuildRequires:	python3-distutils-extra
 BuildRequires:	python3-setuptools
 BuildRequires:	%{_bindir}/appstream-util
 
+# python module
 %BothRequires	python3-gobject
 %BothRequires	python3-pexpect
 %BothRequires	python3-dbus
 
-# gobject introspection
+# gir repository
+Requires:	gdk-pixbuf2
+Requires:	glib2
+Requires:	gobject-introspection
+Requires:	gtk3 >= 3.10.0
+Requires:	pango
 Requires:	xfconf
-
-Requires:	xdg-utils
+# optional zeitgeist dependency not listed
+# /usr/share/mime/globs2
+Requires:	shared-mime-info
+# opening file uses this
+Requires:	%{_bindir}/xdg-open
 # search engine
 Requires:	%{_bindir}/locate
 # icon
@@ -166,6 +175,10 @@ appstream-util validate-relax --nonet %{buildroot}%{_metainfodir}/%{name}.appdat
 
 
 %changelog
+* Thu Sep 30 2021 Mamoru TASAKA <mtasaka@fedoraproject.org> - 4.16.3-1
+- 4.16.3
+- List gir repository dependency explicitly
+
 * Wed Aug  4 2021 Mamoru TASAKA <mtasaka@fedoraproject.org> - 4.16.2-1
 - 4.16.2
 
diff --git a/sources b/sources
index 590d090..fd19758 100644
--- a/sources
+++ b/sources
@@ -1 +1 @@
-SHA512 (catfish-4.16.2.tar.bz2) = a1dc2839106d55e11e537478402b44d3794cdcf326c5984bd95d0d5a8bad52d91df1be22ba347d23f030d0c62fdf2b90a507e2abc30ed4b4d1804ab8dbde1dbe
+SHA512 (catfish-4.16.3.tar.bz2) = 23ffa160b0593033a9696644fd00c48e4a6f54dc25448f975f0949aece50d8e4fbb45b9ad086a8e14072ac1dab27e0b4ecd19af0f31a5b4a775b17e18b00c7bb