diff --git a/frappe/templates/base.html b/frappe/templates/base.html
index aaed0035b9..dc87ab72dd 100644
--- a/frappe/templates/base.html
+++ b/frappe/templates/base.html
@@ -30,11 +30,11 @@
 		{%- if theme.name != 'Standard' -%}
 		<link type="text/css" rel="stylesheet" href="{{ theme.theme_url }}">
 		{%- else -%}
-		<link type="text/css" rel="stylesheet" href="/assets/css/frappe-web-b4.css">
+		<link type="text/css" rel="stylesheet" href="/assets/css/frappe-web-b4.css?ver={{ build_version }}">
 		{%- endif -%}
 
 		{%- for link in web_include_css %}
-		<link type="text/css" rel="stylesheet" href="{{ link|abs_url }}">
+		<link type="text/css" rel="stylesheet" href="{{ link|abs_url }}?ver={{ build_version }}">
 		{%- endfor -%}
 	{%- endblock -%}
 
@@ -94,12 +94,12 @@
 	{% block base_scripts %}
 	<!-- js should be loaded in body! -->
 	<script type="text/javascript" src="/assets/frappe/js/lib/jquery/jquery.min.js"></script>
-	<script type="text/javascript" src="/assets/js/frappe-web.min.js"></script>
+	<script type="text/javascript" src="/assets/js/frappe-web.min.js?ver={{ build_version }}"></script>
 	<script type="text/javascript" src="/assets/js/bootstrap-4-web.min.js"></script>
 	{% endblock %}
 
 	{%- for link in web_include_js %}
-	<script type="text/javascript" src="{{ link | abs_url }}"></script>
+	<script type="text/javascript" src="{{ link | abs_url }}?ver={{ build_version }}"></script>
 	{%- endfor -%}
 
 	{%- block script %}
diff --git a/frappe/utils/__init__.py b/frappe/utils/__init__.py
index d3bf1dd10c..c209ee13c9 100644
--- a/frappe/utils/__init__.py
+++ b/frappe/utils/__init__.py
@@ -721,3 +721,11 @@ def get_file_size(path, format=False):
 		num /= 1024
 
 	return "{0:.1f}{1}{2}".format(num, 'Yi', suffix)
+
+def get_build_version():
+	try:
+		return str(os.path.getmtime(os.path.join(frappe.local.sites_path, '.build')))
+	except OSError:
+		# .build can sometimes not exist
+		# this is not a major problem so send fallback
+		return frappe.utils.random_string(8)
diff --git a/frappe/website/router.py b/frappe/website/router.py
index 22d186790b..5244c57ba8 100644
--- a/frappe/website/router.py
+++ b/frappe/website/router.py
@@ -275,8 +275,7 @@ def get_page_info(path, app, start, basepath=None, app_path=None, fname=None):
 	# extract properties from controller attributes
 	load_properties_from_controller(page_info)
 
-	# if not page_info.title:
-	# 	print('no-title-for', page_info.route)
+	page_info.build_version = frappe.utils.get_build_version()
 
 	return page_info
 
diff --git a/frappe/www/desk.py b/frappe/www/desk.py
index c6bce850a5..e5c3c6af5c 100644
--- a/frappe/www/desk.py
+++ b/frappe/www/desk.py
@@ -36,7 +36,7 @@ def get_context(context):
 
 	context.update({
 		"no_cache": 1,
-		"build_version": get_build_version(),
+		"build_version": frappe.utils.get_build_version(),
 		"include_js": hooks["app_include_js"],
 		"include_css": hooks["app_include_css"],
 		"sounds": hooks["sounds"],
@@ -82,11 +82,3 @@ def get_desk_assets(build_version):
 		"boot": data["boot"],
 		"assets": assets
 	}
-
-def get_build_version():
-	try:
-		return str(os.path.getmtime(os.path.join(frappe.local.sites_path, '.build')))
-	except OSError:
-		# .build can sometimes not exist
-		# this is not a major problem so send fallback
-		return frappe.utils.random_string(8)