diff --git a/apps/files/css/files.css b/apps/files/css/files.css
index 1f8aa10bdb..2e12d06bd9 100644
--- a/apps/files/css/files.css
+++ b/apps/files/css/files.css
@@ -87,26 +87,26 @@
 
 /* icons for sidebar */
 .nav-icon-files {
-	background-image: url('../img/folder.svg');
+	background-image: url('../img/folder.svg?v=1');
 }
 .nav-icon-recent {
-	background-image: url('../img/recent.svg');
+	background-image: url('../img/recent.svg?v=1');
 }
 .nav-icon-favorites {
-	background-image: url('../img/star.svg');
+	background-image: url('../img/star.svg?v=1');
 }
 .nav-icon-sharingin,
 .nav-icon-sharingout {
-	background-image: url('../img/share.svg');
+	background-image: url('../img/share.svg?v=1');
 }
 .nav-icon-sharinglinks {
-	background-image: url('../img/public.svg');
+	background-image: url('../img/public.svg?v=1');
 }
 .nav-icon-extstoragemounts {
-	background-image: url('../img/external.svg');
+	background-image: url('../img/external.svg?v=1');
 }
 .nav-icon-trashbin {
-	background-image: url('../img/delete.svg');
+	background-image: url('../img/delete.svg?v=1');
 }
 
 #app-navigation .nav-files a.nav-icon-files {
diff --git a/core/css/apps.css b/core/css/apps.css
index 3ffa7d8709..be5b045cc2 100644
--- a/core/css/apps.css
+++ b/core/css/apps.css
@@ -92,7 +92,7 @@
 	width: 44px;
 	margin: 0;
 	padding: 0;
-	background: none; background-image: url('../img/actions/triangle-s.svg');
+	background: none; background-image: url('../img/actions/triangle-s.svg?v=1');
 	background-size: 16px; background-repeat: no-repeat; background-position: center;
 	border: none;
 	border-radius: 0;
@@ -256,7 +256,7 @@
 		background-color: transparent;
 		background-repeat: no-repeat;
 		background-position: center;
-		background-image: url('../img/actions/more.svg');
+		background-image: url('../img/actions/more.svg?v=1');
 	}
 
 	#app-navigation .app-navigation-entry-utils-menu-button:hover button,
@@ -497,7 +497,7 @@
 	padding: 0;
 	margin: 0;
 	background-color: #fff;
-	background-image: url('../img/actions/settings.svg');
+	background-image: url('../img/actions/settings.svg?v=1');
 	background-position: 14px center;
 	background-repeat: no-repeat;
 	box-shadow: none;
diff --git a/core/css/header.css b/core/css/header.css
index 5a2b8009b1..efdd3be7ce 100644
--- a/core/css/header.css
+++ b/core/css/header.css
@@ -68,7 +68,7 @@
 }
 
 #header .logo {
-	background-image: url('../img/logo-icon.svg');
+	background-image: url('../img/logo-icon.svg?v=1');
 	background-repeat: no-repeat;
 	background-size: 175px;
 	background-position: center;
@@ -80,7 +80,7 @@
 #header .logo-icon {
 	/* display logo so appname can be shown next to it */
 	display: inline-block;
-	background-image: url('../img/logo-icon.svg');
+	background-image: url('../img/logo-icon.svg?v=1');
 	background-repeat: no-repeat;
 	background-position: center center;
 	width: 62px;
diff --git a/core/css/styles.css b/core/css/styles.css
index a8e632c594..b5a84108df 100644
--- a/core/css/styles.css
+++ b/core/css/styles.css
@@ -26,7 +26,7 @@ body {
 #body-login {
 	text-align: center;
 	background-color: #0082c9;
-	background-image: url('../img/background.jpg');
+	background-image: url('../img/background.jpg?v=1');
 	background-position: 50% 50%;
 	background-repeat: no-repeat;
 	background-size: cover;
@@ -98,7 +98,7 @@ a.two-factor-cancel {
 	font-size: 1.2em;
 	padding: 3px;
 	padding-left: 25px;
-	background: transparent url('../img/actions/search-white.svg') no-repeat 6px center;
+	background: transparent url('../img/actions/search-white.svg?v=1') no-repeat 6px center;
 	color: #fff;
 	border: 0;
 	border-radius: 3px;
@@ -465,7 +465,7 @@ label.infield {
 	position: absolute !important;
 	height: 20px;
 	width: 24px;
-	background-image: url('../img/actions/toggle.svg');
+	background-image: url('../img/actions/toggle.svg?v=1');
 	background-repeat: no-repeat;
 	background-position: center;
 	-ms-filter: "progid:DXImageTransform.Microsoft.Alpha(Opacity=30)";
@@ -757,15 +757,15 @@ a.bookmarklet { background-color:#ddd; border:1px solid #ccc; padding:5px;paddin
 .exception{color:#000;}
 .exception textarea{width:95%;height:200px;background:#ffe;border:0;}
 
-.ui-icon-circle-triangle-e{ background-image:url('../img/actions/play-next.svg'); }
-.ui-icon-circle-triangle-w{ background-image:url('../img/actions/play-previous.svg'); }
+.ui-icon-circle-triangle-e{ background-image:url('../img/actions/play-next.svg?v=1'); }
+.ui-icon-circle-triangle-w{ background-image:url('../img/actions/play-previous.svg?v=1'); }
 
 .ui-datepicker-prev,.ui-datepicker-next{ border:1px solid #ddd; background:#fff; }
 
 /* ---- DIALOGS ---- */
 #oc-dialog-filepicker-content .dirtree {width:92%; overflow:hidden; }
 #oc-dialog-filepicker-content .dirtree .home {
-	background-image:url('../img/places/home.svg');
+	background-image:url('../img/places/home.svg?v=1');
 	background-repeat:no-repeat;
 	background-position: left center;
 	width: 30px;
@@ -848,7 +848,7 @@ span.ui-icon {float: left; margin: 3px 7px 30px 0;}
 }
 .popup.topright { top:7em; right:1em; }
 .popup.bottomleft { bottom:1em; left:33em; }
-.popup .close { position:absolute; top:0.2em; right:0.2em; height:20px; width:20px; background:url('../img/actions/close.svg') no-repeat center; }
+.popup .close { position:absolute; top:0.2em; right:0.2em; height:20px; width:20px; background:url('../img/actions/close.svg?v=1') no-repeat center; }
 .popup h2 { font-size:20px; }
 .arrow { border-bottom:10px solid white; border-left:10px solid transparent; border-right:10px solid transparent; display:block; height:0; position:absolute; width:0; z-index:201; }
 .arrow.left { left:-13px; bottom:1.2em; -webkit-transform:rotate(270deg); -ms-transform:rotate(270deg); transform:rotate(270deg); }
@@ -860,7 +860,7 @@ span.ui-icon {float: left; margin: 3px 7px 30px 0;}
 div.crumb {
 	float: left;
 	display: block;
-	background-image: url('../img/breadcrumb.svg');
+	background-image: url('../img/breadcrumb.svg?v=1');
 	background-repeat: no-repeat;
 	background-position: right center;
 	height: 44px;
diff --git a/core/templates/layout.user.php b/core/templates/layout.user.php
index 2c0d3f0529..17f895bc17 100644
--- a/core/templates/layout.user.php
+++ b/core/templates/layout.user.php
@@ -81,14 +81,14 @@
 					<li>
 						<a href="<?php print_unescaped($entry['href']); ?>"
 							<?php if( $entry["active"] ): ?> class="active"<?php endif; ?>>
-							<img alt="" src="<?php print_unescaped($entry['icon']); ?>">
+							<img alt="" src="<?php print_unescaped($entry['icon'] . '?v=' . $_['versionHash']); ?>">
 							<?php p($entry['name']) ?>
 						</a>
 					</li>
 				<?php endforeach; ?>
 					<li>
 						<a id="logout" <?php print_unescaped(OC_User::getLogoutAttribute()); ?>>
-							<img alt="" src="<?php print_unescaped(image_path('', 'actions/logout.svg')); ?>">
+							<img alt="" src="<?php print_unescaped(image_path('', 'actions/logout.svg') . '?v=' . $_['versionHash']); ?>">
 							<?php p($l->t('Log out'));?>
 						</a>
 					</li>
@@ -115,7 +115,7 @@
 							<?php if( $entry['active'] ): ?> class="active"<?php endif; ?>>
 							<svg width="32" height="32" viewBox="0 0 32 32">
 								<defs><filter id="invert"><feColorMatrix in="SourceGraphic" type="matrix" values="-1 0 0 0 1 0 -1 0 0 1 0 0 -1 0 1 0 0 0 1 0"></feColorMatrix></filter></defs>
-								<image x="0" y="0" width="32" height="32" preserveAspectRatio="xMinYMin meet" filter="url(#invert)" xlink:href="<?php print_unescaped($entry['icon']); ?>"  class="app-icon"></image>
+								<image x="0" y="0" width="32" height="32" preserveAspectRatio="xMinYMin meet" filter="url(#invert)" xlink:href="<?php print_unescaped($entry['icon'] . '?v=' . $_['versionHash']); ?>"  class="app-icon"></image>
 							</svg>
 							<div class="icon-loading-dark" style="display:none;"></div>
 							<span>
@@ -133,7 +133,7 @@
 							<?php if( $_['appsmanagement_active'] ): ?> class="active"<?php endif; ?>>
 							<svg width="32" height="32" viewBox="0 0 32 32" class="app-icon">
 								<defs><filter id="invert"><feColorMatrix in="SourceGraphic" type="matrix" values="-1 0 0 0 1 0 -1 0 0 1 0 0 -1 0 1 0 0 0 1 0"></feColorMatrix></filter></defs>
-								<image x="0" y="0" width="32" height="32" preserveAspectRatio="xMinYMin meet" filter="url(#invert)" xlink:href="<?php print_unescaped(image_path('settings', 'apps.svg')); ?>"></image>
+								<image x="0" y="0" width="32" height="32" preserveAspectRatio="xMinYMin meet" filter="url(#invert)" xlink:href="<?php print_unescaped(image_path('settings', 'apps.svg') . '?v=' . $_['versionHash']); ?>"></image>
 							</svg>
 							<div class="icon-loading-dark" style="display:none;"></div>
 							<span>
diff --git a/lib/private/TemplateLayout.php b/lib/private/TemplateLayout.php
index 9e3bbf8847..7e5c120717 100644
--- a/lib/private/TemplateLayout.php
+++ b/lib/private/TemplateLayout.php
@@ -153,6 +153,7 @@ class TemplateLayout extends \OC_Template {
 		$cssFiles = self::findStylesheetFiles(\OC_Util::$styles);
 		$this->assign('cssfiles', array());
 		$this->assign('printcssfiles', []);
+		$this->assign('versionHash', self::$versionHash);
 		foreach($cssFiles as $info) {
 			$web = $info[1];
 			$file = $info[2];