diff --git a/AppStream-0.15.3.tar.xz b/AppStream-0.15.3.tar.xz
deleted file mode 100644
index 5fd1a9c..0000000
--- a/AppStream-0.15.3.tar.xz
+++ /dev/null
@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:3e676c3368aebe9618f394c58a7f0a6c73d1a15efd9ba2d230c229a959e8a25d
-size 2474376
diff --git a/AppStream-0.15.3.tar.xz.asc b/AppStream-0.15.3.tar.xz.asc
deleted file mode 100644
index 1b534e1..0000000
--- a/AppStream-0.15.3.tar.xz.asc
+++ /dev/null
@@ -1,16 +0,0 @@
------BEGIN PGP SIGNATURE-----
-
-iQIzBAABCAAdFiEE0zo/DKFrCsxRpgc4SUyKX79N7OsFAmJTLlYACgkQSUyKX79N
-7OtHhQ//Qz+AyNWZpL9I4p0clFxLwOwF2Ag4XLHKG+QG2BNEDAgdUy8MtM/aW5fN
-hZrgz0kKNDqooGE1bQNOT/nf0zoG9646oKQghWr+3iJzlaFQGiFoHlYafHYOs5UV
-8YsHGkFC11gXU9yFep7xzlZG+EUKJvnW/yTqvAo80p+dgBr8xIliocLRpOZd3HZT
-78SbhBMBlpUz/DCzutTHRGXMD9S3t3s2AJU8JDHNXbBkwOUJlcAh+HFGz9qYK4n9
-w4Y1F9J5Zo/oeMae7b2HoR9nMA4SKzzVPLKSiV2DoY1zhBTVEmFaeC9XeqcjkZkm
-XP17S0ya3F8NO0mRuwN19WlHQ6YpLL/4z3VJQL51ZvogMcxur6NHSmq5GhVz+SxW
-4BgnMiqGV+UYV9F0l8SBbs+iv5usJi6/eoaMZwkYHNfwK9zs4pRhuKyK2vrtJVtU
-t2OkQl+xvfIVusy5lz7+HjFIvzGW0VgDngthXib2vXs3X0JsKOL4z96+8PIGI1Od
-bdG0AWSbO+p0oec+DTecW5BBV7mz5n2xk01qVJrUb/7P4hNzMQbEcQALvoYvyNiD
-n8Mu3w9rN62BAbJJOY0Af2+gnhOFnuzZf4SeECnDfhhc+5IF/OX/vDU6U97NrSHH
-a/thDm/BD4QT0Xdzs8JikpieTLScH5HjIbyudlyMPocx76Aohuk=
-=OZge
------END PGP SIGNATURE-----
diff --git a/AppStream-0.15.4.tar.xz b/AppStream-0.15.4.tar.xz
new file mode 100644
index 0000000..deb3c36
--- /dev/null
+++ b/AppStream-0.15.4.tar.xz
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:c4126b6ebc889afb2e3ab5dfd8303bd31a9cd2a3992391de4dc66cb0e12846dd
+size 2482892
diff --git a/AppStream-0.15.4.tar.xz.asc b/AppStream-0.15.4.tar.xz.asc
new file mode 100644
index 0000000..8be8b30
--- /dev/null
+++ b/AppStream-0.15.4.tar.xz.asc
@@ -0,0 +1,16 @@
+-----BEGIN PGP SIGNATURE-----
+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+=3Zgx
+-----END PGP SIGNATURE-----
diff --git a/AppStream.changes b/AppStream.changes
index 176513b..4a97f85 100644
--- a/AppStream.changes
+++ b/AppStream.changes
@@ -1,3 +1,21 @@
+-------------------------------------------------------------------
+Wed Jul  6 17:54:45 UTC 2022 - Andreas Stieger <andreas.stieger@gmx.de>
+
+- AppStream 0.15.4:
+  * validator: Check timestamp validity
+  * validator: Allow (limited) overriding of issue tag severities
+  * validator: Add strict mode
+  * ascli: validate: Allow simple overriding of issue tags
+  * validator: Check for exact relation item redefinitions
+  * Add vcs-browser URL to metainfo.xml
+  * compose: Improve media-baseurl sanity checks for icon/screenshot policies
+  * compose: Don't create bad data when localized screenshots exist
+  * compose: Sanitize prefix value and verify all units for results
+  * compose: Fail and not just warn if we couldn't open a unit
+  * compose: Make no-result detection a bit more robust
+  * compose: Properly handle localized screenshots
+  * compose: Ignore current locale when analyzing screencasts
+
 -------------------------------------------------------------------
 Mon Apr 25 17:47:50 UTC 2022 - Ferdinand Thiessen <rpm@fthiessen.de>
 
diff --git a/AppStream.spec b/AppStream.spec
index 13c116c..e8b1e5c 100644
--- a/AppStream.spec
+++ b/AppStream.spec
@@ -16,13 +16,13 @@
 #
 
 
+%define libappstream_sover 4
+%define libAppStreamQt_sover 2
 %if 0%{?sle_version} >= 150300 && 0%{?is_opensuse} || 0%{?suse_version} > 1500
 %bcond_without vala
 %endif
-%define libappstream_sover 4
-%define libAppStreamQt_sover 2
 Name:           AppStream
-Version:        0.15.3
+Version:        0.15.4
 Release:        0
 Summary:        Tools and libraries to work with AppStream metadata
 License:        LGPL-2.1-or-later
@@ -47,10 +47,10 @@ BuildRequires:  pkgconfig(libcurl)
 BuildRequires:  pkgconfig(libxml-2.0)
 BuildRequires:  pkgconfig(xmlb) >= 0.3.6
 BuildRequires:  pkgconfig(yaml-0.1)
+Recommends:     curl
 %if %{with vala}
 BuildRequires:  vala
 %endif
-Recommends:     curl
 
 %description
 AppStream-Core makes it easy to access application information from the