diff --git a/kde-frameworks/oxygen-icons/oxygen-icons-5.70.0.ebuild b/kde-frameworks/oxygen-icons/oxygen-icons-5.70.0.ebuild
index d64a7f659da26..5c03e77bfecd8 100644
--- a/kde-frameworks/oxygen-icons/oxygen-icons-5.70.0.ebuild
+++ b/kde-frameworks/oxygen-icons/oxygen-icons-5.70.0.ebuild
@@ -6,7 +6,7 @@ EAPI=7
 KDE_ORG_NAME="oxygen-icons5"
 PVCUT=$(ver_cut 1-2)
 QTMIN=5.12.3
-inherit cmake kde.org
+inherit cmake kde.org xdg-utils
 
 DESCRIPTION="Oxygen SVG icon theme"
 
@@ -27,3 +27,11 @@ src_prepare() {
 	cmake_src_prepare
 	use test || cmake_comment_add_subdirectory autotests
 }
+
+pkg_postinst() {
+	xdg_icon_cache_update
+}
+
+pkg_postrm() {
+	xdg_icon_cache_update
+}
diff --git a/kde-frameworks/oxygen-icons/oxygen-icons-5.72.0.ebuild b/kde-frameworks/oxygen-icons/oxygen-icons-5.72.0.ebuild
index ed436f5301caf..e4cbd64523e3b 100644
--- a/kde-frameworks/oxygen-icons/oxygen-icons-5.72.0.ebuild
+++ b/kde-frameworks/oxygen-icons/oxygen-icons-5.72.0.ebuild
@@ -6,7 +6,7 @@ EAPI=7
 KDE_ORG_NAME="oxygen-icons5"
 PVCUT=$(ver_cut 1-2)
 QTMIN=5.14.2
-inherit cmake kde.org
+inherit cmake kde.org xdg-utils
 
 DESCRIPTION="Oxygen SVG icon theme"
 
@@ -27,3 +27,11 @@ src_prepare() {
 	cmake_src_prepare
 	use test || cmake_comment_add_subdirectory autotests
 }
+
+pkg_postinst() {
+	xdg_icon_cache_update
+}
+
+pkg_postrm() {
+	xdg_icon_cache_update
+}